manuelmazzuola's reading list
A mostly complete list of articles I've read on the internet.
There are currently 126 entries in the list.
Last modified 15-01-2024.
My blog: manuelmazzuola.dev
Jump to :: Sep 2022 :: Oct 2022 :: Nov 2022 :: Dec 2022 :: Jan 2023 :: Mar 2023 :: Apr 2023 :: May 2023 :: Jun 2023 :: Jul 2023 :: Aug 2023 :: Sep 2023 :: Oct 2023 :: Nov 2023 :: Dec 2023 :: Jan 2024
January 2024
- How to build a submarine and survive - media.ccc.de - 15-01-2024 -
- 3,4 Tonnen schwer, 4,3 Meter lang, Material: Stahl, Farbe: Orange und der Fahrzeugtyp ist „Sporttauchboot”. Vom Fund eines Drucktanks bis... - Getting things done (in small increments) - 12-01-2024
- Linux 6.8 Network Optimizations Can Boost TCP Performance For Many Concurrent Connections By ~40% - Phoronix - 10-01-2024 -
- www.google.com - The page is blank when accessed · Issue #131916 · webcompat/web-bugs - 10-01-2024 - - URL: https://www.google.com/ Browser / Version: Firefox Mobile 121.0 Operating System: Android 13 Tested Another Browser: Yes Other Problem type: Site is not usable Description: Page not loading co...
- electromagnetic radiation - Why does a remote car key work when held to your head/body? - Physics Stack Exchange - 09-01-2024 -
- Clicks for iPhone - 05-01-2024 - - Clicks brings a REAL KEYBOARD to your iPhone. Enjoy the feel of buttons, type with precision and double your space to create. Available now. Ships worldwide.
- 27 Years Ago, Steve Jobs Said the Best Employees Focus on Content, Not Process. Research Shows He Was Right | Inc.com - 05-01-2024 - According to the Apple co-founder, the best employees are also a pain in the butt to manage.
- After 34 Years, Someone Finally Beat Tetris - YouTube - 05-01-2024 - - The first ever "True" Killscreen was just reached in NES Tetris. Can this record ever be broken?Blue Scuti's full WR VOD: https://www.youtube.com/watch?v=uh...
- $450 for a School Bag?! - 02-01-2024 - - Every year, around March, a curious social custom occurs in Japanese families. Parents of kids entering elementary school visit the grandparents and gingerly tread the topic of buying the kids a very expensive item: a randoseru. And gingerly they must tread. The randoseru, a Japanese school bag, costs a whopping
December 2023
- Simulating Fluids, Fire, and Smoke in Real-Time - 20-12-2023 - - Notes on the math, algorithms, and methods involved in simulating fluids like fire and smoke in real-time.
- iMessage, explained - JJTech - 06-12-2023 - - This blog post is going to be a cursory overview of the internals iMessage, as I’ve discovered during my work on pypush, an open source project that reimplements iMessage.
- Beeper Mini - iMessage on Android - 06-12-2023 - - Finally, get blue bubbles on Android! Your Android phone number is now blue. Join iPhone-only group chats, send full size media and more.
November 2023
- traderepublic/Cilicon at console.dev - 30-11-2023 - 🛠️ Self-Hosted ephemeral macOS CI on Apple Silicon - traderepublic/Cilicon at console.dev
- Web Components Eliminate JavaScript Framework Lock-in | jakelazaroff.com - 27-11-2023 - - Web components can dramatically loosen the coupling of JavaScript frameworks. To prove it, we're going to do something kinda crazy: build an app where every single component is written in a different JavaScript framework.
- LM Studio - Discover, download, and run local LLMs - 23-11-2023 - - Find, download, and experiment with local LLMs
- Bacteria Store Memories and Pass Them on for Generations - UT News - 22-11-2023 - - AUSTIN, Texas — Scientists have discovered that bacteria can create something like memories about when to form strategies that can cause dangerous
- arcataroger/awesome-engineering-games: A curated list of engineering-related video games rated Very Positive or higher on Steam - 21-11-2023 - A curated list of engineering-related video games rated Very Positive or higher on Steam - arcataroger/awesome-engineering-games: A curated list of engineering-related video games rated Very Positi...
- Vespa 150 TAP - Wikipedia - 21-11-2023 -
- UNIGE 14x050 – Deep Learning - 19-11-2023 - - Slides and virtual machine for François Fleuret's Deep Learning Course
- ‘Energy independent’ Uruguay runs on 100% renewables for four straight months - The Progress Playbook - 17-11-2023 - - "Ask me what was the impact on the electricity sector in Uruguay after this tragic war in Europe — zero."
- How moving from AWS to Bare-Metal saved us 230,000$ /yr. - 17-11-2023 - - In the ever-evolving world of technology, businesses are constantly looking for ways to optimize their operations and reduce costs. One such journey we embarked on was moving our infrastructure from Amazon Web Services (AWS) to a bare-metal solution. This transition not only provided us with more control over our resources
- GPU Survival Toolkit for the AI age: The bare minimum every developer must know - 13-11-2023 - - Why CPU Knowledge Is No Longer Enough In today's AI age, the majority of developers train in the CPU way. This knowledge has been part of our academics as well, so it's obvious to think and problem-solve in a CPU-oriented way. However, the problem with CPUs is that they rely
- microsoft/inshellisense: IDE style command line auto complete - 10-11-2023 - IDE style command line auto complete. Contribute to microsoft/inshellisense development by creating an account on GitHub.
- Monaspace - 10-11-2023 - - An innovative superfamily of fonts for code
- 10 hard-to-swallow truths they won't tell you about software engineer job - 08-11-2023 - - Last weekend I had a chance to talk with some students who just got their degree. They are pursuing their first software engineer job. In conversation with them, I learned that they have a pretty wrong perception of this job. This is because the reality for these new kids is so skewed.
- Don't write clean code, write CRISP code — Bitfield Consulting - 07-11-2023 - - “Clean code” is so over: all the cool kids are switching to CRISP code . I’ll show you how to achieve it in five catchy, T-shirt-friendly slogans.
- immich-app/immich: Self-hosted photo and video backup solution directly from your mobile phone. - 06-11-2023 - - Self-hosted photo and video backup solution directly from your mobile phone. - immich-app/immich: Self-hosted photo and video backup solution directly from your mobile phone.
- Post Mortem on Cloudflare Control Plane and Analytics Outage - 04-11-2023 - - Beginning on Thursday, November 2, 2023, at 11:43 UTC Cloudflare's control plane and analytics services experienced an outage. Here are the details
- Confusing git terminology - 03-11-2023 - Confusing git terminology
- Git - Rerere - 03-11-2023 -
October 2023
- The beauty of finished software | Jose M. - 31-10-2023 - - Let me introduce you to WordStar 4.0, a popular word processor from the early 80s. WordStar 4.0 As old as it seems, George R.R. Martin used it to write “A Song of Ice and Fire”. Why would someone use such an old piece of software to write over 5,000 pages? I love how he puts it: It does everything I want a word processing program to do and it doesn't do anything else.
- Nasa can’t open its asteroid capsule - Tortoise - 31-10-2023 - - The team behind Nasa’s Osiris-REx mission is struggling to open fully the container holding the bulk of the sample from asteroid Bennu. Since the 4.5 billion year-old sample landed in the Utah desert earlier this month, scientists have already managed to collect 70.3 grams of rocks and dust lying on the outside of the container, …
- The costs of microservices | Roberto Vitillo's Blog - 31-10-2023 - - An application typically starts its life as a monolith. Take a modern backend of a single-page Javascript application, for example - it starts out as a single…
- Keeping containers alive in a Kubernetes cluster can feel more like art than science. | Medium - 30-10-2023 - Look ready, and stay alive.
- How deep is the brain? The shallow brain hypothesis | Nature Reviews Neuroscience - 30-10-2023 - - Architectures in neural networks commonly assume that inference is hierarchical. In this Perspective, Suzuki et al. present the shallow brain hypothesis, a neural processing mechanism based on neuroanatomical and electrophysiological evidence that intertwines hierarchical cortical processing with a massively parallel process to which subcortical areas substantially contribute.
- simeydotme/pokemon-cards-css: A collection of advanced CSS styles to create realistic-looking effects for the faces of Pokemon cards. - 27-10-2023 - A collection of advanced CSS styles to create realistic-looking effects for the faces of Pokemon cards. - simeydotme/pokemon-cards-css: A collection of advanced CSS styles to create realistic-looki...
- Bird takes on typhoon for an insane 700-mile sky-high ride of his life - 27-10-2023 - In 2019, a bold male seabird threw caution to the wind, flying above Typhoon Faxai as the storm pummeled southeastern Japan. It was the start of an 11-hour, 1,146-km (712-mile) crazy journey, that took the bird 15,000 feet higher than normal, at three times its usual speed, on a ride that his…
- Jonas Hietala: The killer features of the Steam Deck - 27-10-2023
- Software disenchantment @ tonsky.me - 24-10-2023 - - Everything is going to hell and nobody seems to care
- mthiim/dilithium-java: Experimental Java implementation of post-quantum crypto algorithm Dilithium (including JCE provider) - 24-10-2023 - - Experimental Java implementation of post-quantum crypto algorithm Dilithium (including JCE provider) - mthiim/dilithium-java: Experimental Java implementation of post-quantum crypto algorithm Dilit...
- How To Make A CPU - A Simple Picture Based Explanation - 23-10-2023 -
- Nanofiche — Arch Mission Foundation - Preserving humanity forever, in space and on Earth. - 23-10-2023 - - Nanofiche is an archival technology, designed to preserve knowledge forever.
- Ruffle | Ruffle is a Flash Player emulator written in Rust. Ruffle targets both desktop and the web using WebAssembly. - 23-10-2023 - - Ruffle is a Flash Player emulator written in Rust. Ruffle targets both desktop and the web using WebAssembly.
- Should you be scared of Unix signals? - 17-10-2023 - - Should you be scared of Unix signals?
- Training AI to Play Pokemon with Reinforcement Learning - YouTube - 15-10-2023 - - Divertiti con i video e la musica che ami, carica contenuti originali e condividi tutto con amici, familiari e con il mondo su YouTube.
- spacedriveapp/spacedrive: Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust. - 12-10-2023 - - Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust. - spacedriveapp/spacedrive: Spacedrive is an open source cross-platform file ...
- spacedriveapp/spacedrive: Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust. - 12-10-2023 - - Spacedrive is an open source cross-platform file explorer, powered by a virtual distributed filesystem written in Rust. - spacedriveapp/spacedrive: Spacedrive is an open source cross-platform file ...
- Announcing Cloud Spanner price-performance updates | Google Cloud Blog - 12-10-2023 - - Alongside lower costs, Cloud Spanner provides single-digit ms latencies and strong consistency across multiple availability zones in the same region.
- Exploiting the iPhone 4, Part 1: Gaining Entry | Phillip Tennen - 02-10-2023 - - Introduction Years ago, I was active in the iOS tweak development scene. I made many products and tools, distributed on Cydia, that modified iOS system behavior and added new functionality to SpringBoard. This was a really fun time, and gave me valuable early career exposure to reverse engineering closed-source binaries, interacting directly with the Objective-C runtime, and entrepreneurship. I’m really grateful for those years. Quick app interactionvia 3D Touch Force Touch app launcher.
September 2023
- RealFill - 30-09-2023 - - RealFill: Reference-Driven Generation for Authentic Image Completion
- The Pirate Bay Celebrates Its 20th Anniversary * TorrentFreak - 21-09-2023 - - The Pirate Bay celebrates its 20th anniversary today. The site had many setbacks over the years but remains online today.
- Toyota Research Institute Unveils Breakthrough in Teaching Robots New Behaviors | Toyota Research Institute - 21-09-2023 -
- Linux gives up on 6-year LTS kernels, says they’re too much work | Ars Technica - 21-09-2023 - - Linux's six-year long-term support was meant to help embedded devices.
- Nasa says distant exoplanet could have rare water ocean and possible hint of life | Nasa | The Guardian - 12-09-2023 - - Space agency said potential finding of dimethyl sulfide on K2-18 b, produced only by life on Earth, is yet to be confirmed
- Death by a thousand microservices - 12-09-2023 - - The software industry is learning once again that complexity kills
- 9/11 Realtime - 12-09-2023 -
- Tidal Energy - Not Renewable - 05-09-2023 -
- Get a Cable Modem....Go to Jail - 05-09-2023 -
August 2023
- DevOps isn’t dead: How platform engineering enables DevOps at scale - CircleCI - 22-08-2023 - Learn how platform engineering enables software teams to manage DevOps at scale.
July 2023
- Building and operating a pretty big storage system called S3 | All Things Distributed - 28-07-2023 - - Three distinct perspectives on scale that come along with building and operating a storage system the size of S3.
- It Takes 6 Days to Change 1 Line of Code - ed weissman - 17-07-2023 - - (A true story.) Philip (President): Our factory is underutilized by 10%. Either we start building more of our backlog or we lay people off. I'd rather keep everyone busy, build inventory, and get...
- After 30 Years, Linux Finally Hits 3% Market Share - 11-07-2023 - - Linux enthusiasts rejoice! After a long journey, according to StatCounter's data, by June 2023, Linux has achieved a 3% desktop market share.
- Is ORM still an 'anti pattern'? · getlago/lago Wiki - 04-07-2023 - Open Source Metering and Usage Based Billing. Contribute to getlago/lago development by creating an account on GitHub.
June 2023
- Maps Distort How We See the World - by Tomas Pueyo - 22-06-2023 - - 30 Maps to Rethink the World
- Imaginary Problems Are the Root of Bad Software - 20-06-2023 - - [Audio version (read by a tts bot)](https://youtu.be/9jODhmgkp3o)  ![https://upload.wikimedia.org/wikipedia/commons/c/c0/De_Rebus_Bellicis%2C_XVth_
- Moving Blazingly Fast With The Core Vim Motions | Barbarian Meets Coding - 15-06-2023 - - Where you learn the power of motions and how you can move blazingly fast and with extreme prevision using VSCodeVim
- Apple's Vision Pro headset deserves to be ridiculed - 06-06-2023 - - Tech companies want us isolated and constantly staring at screens because it drives profit
May 2023
- The role of cat eye narrowing movements in cat–human communication | Scientific Reports - 31-05-2023 - - Domestic animals are sensitive to human cues that facilitate inter-specific communication, including cues to emotional state. The eyes are important in signalling emotions, with the act of narrowing the eyes appearing to be associated with positive emotional communication in a range of species. This study examines the communicatory significance of a widely reported cat behaviour that involves eye narrowing, referred to as the slow blink sequence. Slow blink sequences typically involve a series of half-blinks followed by either a prolonged eye narrow or an eye closure. Our first experiment revealed that cat half-blinks and eye narrowing occurred more frequently in response to owners’ slow blink stimuli towards their cats (compared to no owner–cat interaction). In a second experiment, this time where an experimenter provided the slow blink stimulus, cats had a higher propensity to approach the experimenter after a slow blink interaction than when they had adopted a neutral expression. Collectively, our results suggest that slow blink sequences may function as a form of positive emotional communication between cats and humans.
- Break Down Kubernetes Server-Side Apply | by Stefanie Lai | The Startup | Medium - 30-05-2023 - Are you already using the SSA? Do you know the difference between CSA and SSA?
- Visual Fonts – Type Good Pictures - 12-05-2023 - Type Good Pictures
- The concise guide to labels in Loki | Grafana Labs - 11-05-2023 - How using fewer labels leads to better performance in Loki.
- New talk: Learning DNS in 10 years - 11-05-2023 - - New talk: Learning DNS in 10 years
- So many bad takes — What is there to learn from the Prime Video microservices to monolith story | by adrian cockcroft | May, 2023 | Medium - 08-05-2023 - - The Prime Video team published this story: Scaling up the audio/video monitoring service and reducing costs by 90%, and the internet piled…
- Scaling up the Prime Video audio/video monitoring service and reducing costs by 90% - Prime Video Tech - 04-05-2023 - - The move from a distributed microservices architecture to a monolith application helped achieve higher scale, resilience, and reduce costs.
April 2023
- Why is OAuth still hard in 2023? | Nango Blog - 28-04-2023 - We implemented OAuth for the 50 most popular APIs. TL;DR: It is still a mess.
- Apple employees hate Siri and are skeptical of its future - 9to5Mac - 28-04-2023 - - A new report from The Information today goes in-depth on the apparent chaos inside teams at Apple working on Siri...
- NitroKey disappoints me - 26-04-2023 - - A look at NitroKeys latest article
- mjg59 | Booting modern Intel CPUs - 17-04-2023 -
- FAIR Animated Drawings: Home - 14-04-2023 -
- 91% of ML Models Degrade in Time - NannyML - 14-04-2023 -
- everythingishacked/Semaphore: A full-body keyboard using gestures to type through computer vision - 12-04-2023 - - A full-body keyboard using gestures to type through computer vision - everythingishacked/Semaphore: A full-body keyboard using gestures to type through computer vision
- Simply explained: how does GPT work? | Confused bit - 06-04-2023 - - By now, you have probably heard of OpenAI’s ChatGPT, or any of the alternatives GPT-3, GPT-4, Microsoft’s Bing Chat, Facebook’s LLaMa or even Google’s Bard. They are artificial intelligence programs that can participate in a conversation. Impressively smart, they can easily be mistaken for humans, and are skilled in a variety of tasks, from writing a dissertation to the creation of a website. How can a computer hold such a conversation?
- System design and the cost of architectural complexity - 06-04-2023 -
- How to be a -10x Engineer - 04-04-2023 -
- Saying Goodbye to GitHub | Ersei 'n Stuff - 03-04-2023 - - I've been using GitHub since I was eleven years old. To be fair, I didn't really understand git at the time, but I was able to fumble my way through it...
March 2023
- JVM Kubernetes: Optimizing Kubernetes for Java Developers - Pretius - 31-03-2023 - In this tutorial by a seasoned Java Dev, we'll show you how to optimize settings to make JVM work well with a container like Kubernetes.
- sharkdp/bat: A cat(1) clone with wings. - 30-03-2023 - - A cat(1) clone with wings. Contribute to sharkdp/bat development by creating an account on GitHub.
- How to rebase stacked Git branches - Adam Johnson - 29-03-2023 - When working on a feature, you might split it into several stacked branches, so you can merge each one separately. But updating such branches can be annoying, since you have to manage each one. Git 2.38 (2022-10-15) makes such updates easier, with the ability to rebase a stack of branches at once, with the new --update-refs. Let’s look at a couple of examples.
- target_session_attrs options for high availability and scaling - CYBERTEC - 29-03-2023 - This article describes the new settings for "target_session_attrs" and how to use them for high availability and horizontal scaling.
- How the Grafana Alerting team scales their issue management with GitHub Projects | The GitHub Blog - 27-03-2023 - - Hear from Grafana Labs’ Armand Grillet about how his team uses GitHub Projects.
- An aperiodic monotile exists! | The Aperiodical - 23-03-2023 - - Actual aperiodicity news on The Aperiodical! This is probably the biggest aperiodicity news we’ll ever cover here: David Smith, Joseph Samuel Myers, Craig S. Kaplan, and Chaim Goodman-Strauss…
- travisgoodspeed/gbrom-tutorial: Tutorial for extracting the GameBoy ROM from photographs of the die. - 22-03-2023 - - Tutorial for extracting the GameBoy ROM from photographs of the die. - travisgoodspeed/gbrom-tutorial: Tutorial for extracting the GameBoy ROM from photographs of the die.
- Hyundai Promises To Keep Buttons in Cars Because Touchscreen Controls Are Dangerous - 22-03-2023 - - Hyundai knows you like to keep your eyes on the road, and it's giving you the controls to do just that.
- BashPitfalls - Greg's Wiki - 22-03-2023 -
January 2023
- Hyperscale in your Homelab: The Compute Blade arrives | Jeff Geerling - 24-01-2023 -
- The Cab Ride I'll Never Forget | Kent Nerburn - 20-01-2023 - The Cab Ride I'll Never Forget There was a time in my life twenty years ago when I was driving a cab for a living. It was a cowboy’s life, a gambler’s lif
- Music Theory Cheat Sheet: Keys, Scales, Chords, Notes & Intervals - 20-01-2023 - - An interactive music theory cheat sheet with scales, diatonic chords, notes on the piano, notes on the staff and key signature for all major and minor keys.
- Reverse Engineering a Neural Network's Clever Solution to Binary Addition - Casey Primozic's Homepage - 20-01-2023 -
- Let's build GPT: from scratch, in code, spelled out. - YouTube - 18-01-2023 - - We build a Generatively Pretrained Transformer (GPT), following the paper "Attention is All You Need" and OpenAI's GPT-2 / GPT-3. We talk about connections t...
- Chris's Wiki :: blog/linux/Ubuntu2204ServerPhasedUpdates - 17-01-2023 -
- Software Engineering at Google - 13-01-2023 -
- Piano Chords: Simple Online Piano Chord Player - 13-01-2023 - Play piano chords online. Hear and visualize major, minor, diminished, augmented & more chords on the piano. Makes for an easy piano chord reference chart.
- Vim documentation: options - 13-01-2023
- Microservices are a Big Ball of Mud | Code-Held - 11-01-2023 - - Over the past years I attended hundreds of interviews. Many candidates proudly told tales on how they develop their projects with a microservice architecture. Often (I don’t want to say “always”, but from my memory I think it actually is “always”) it does not require many questions to see that they used a rocket launcher to kill a mouse. Microservices are hard. Everyone who experienced the pain of operating such an architecture can relate to it. The complexity kills you at one point or the other. You already had to do multiple refactorings of your architecture - because your domains didn’t work out. I wonder - why is this architecture so appealing to developers? And then I remember what I found them appealing 10 years ago.
- Vim ZZ and Vim zz | Do you know the difference? | Programmer Hat - 10-01-2023 -
- What is a Wildcard Person? | Wildcard People - 02-01-2023 -
- Why Not Mars (Idle Words) - 02-01-2023 -
- Rant: year of Linux on the desktop - 02-01-2023 -
December 2022
- go-profiler-notes/README.md at main · DataDog/go-profiler-notes - 22-12-2022 - - felixge's notes on the various go profiling methods that are available. - go-profiler-notes/README.md at main · DataDog/go-profiler-notes
- Post 43: Intentionally Making Close Friends — Neel Nanda - 06-12-2022 - One of the most valuable experiments I ever ran was intentionally practicing the skill of making close friends, and this directly led to most of my friends today. This post is the story of that experiment, and distills the lessons learned
- A Vim Guide for Advanced Users - 01-12-2022 - - We continue our walk on the path leading to Vim mastery by reviewing crazy Vim functionalities which will increase even more your productivity.
November 2022
- The HTTP crash course nobody asked for - 25-11-2022 - HTTP does a pretty good job staying out of everyone's way. If you're reading this article, there's a solid chance it was delivered to you over HTTP. Even if you're reading this ...
- Arch Linux turns 20 years old • The Register - 25-11-2022 - - DIY distro might not be the best place to start, but you'll learn buckets using it
- The Ancient Japanese Technique That Produces Lumber Without Cutting Tr | DSF Antique Jewelry - 23-11-2022 - - Daisugi is an ancient Japanese forestry technique in which planted cedars are pruned in a special way to produce "shoots" that eventually become perfect, straight, knot-free lumber.This is an ancient method, developed in the 14th century, which was originally used by people living in the Kitayama region of Japan becaus
October 2022
- The Illustrated Stable Diffusion - 05-10-2022 - - How Stable Diffusion works by examples.
- AI-powered communication coach - 05-10-2022 - - AI everywhere.
September 2022
- Aging programmer - 30-09-2022 - - Do people lose interest in programming as they age? NO.
- The spectacular collapse of cryptokitties - 23-09-2022 - - TL;DR Kittys prices < gas fees
- Why do domain names sometimes end with a dot? - 23-09-2022 - - Domain names ending with a dot are "absolute" domains.
- Discussing Backend For Front-end - 22-09-2022 - - BFF architecture to decouple clients and microservices.
- Watching Spirited Away Again, and Again - 22-09-2022 - - Each viewing of Hayao Miyazaki’s animated masterpiece is a gift.
- Build Your Career on Dirty Work - 12-09-2022 - - The lamentable work that many people avoid are great places to look for high impact, low hanging fruit.
- Diffusion Bee - Stable Diffusion GUI App for M1 Mac - 12-09-2022 - - Diffusion Bee is the easiest way to run Stable Diffusion locally on your M1 Mac.
- Digital Exile: How I Got Banned for Life from AirBnB - 08-09-2022 - - Leaving an offsite review is a bannable offense.
- I tracked everything I read on the internet for a year - 08-09-2022 - - Keeping a record of every article read on the internet is cool.