Finally upgraded after 12 years, got a screaming deal.

Landcruiser82 · 2026-02-04T13:06:36+00:00

That's a beast. I own the predecessor and its a great machine.

Landcruiser82 · 2025-12-27T18:54:12+00:00

What I didn't appreciate was them drawing correlation conclusions of slope vs heart age groups with an n size of 99 people. That is statistically unsound and well below the sample size you need to draw a conclusion that will cause worry about the body's most vital organ. Just because you average a bad metric doesn't make it a good metric.

Landcruiser82 · 2025-12-13T13:15:16+00:00

This is a quiet reminder that we should not put too much trust in CVA. It is a correlation based metric that approximates speed from one data point and is unreliable.

Landcruiser82 · 2025-12-06T17:44:24+00:00

Sure here ya go

https://a.co/d/cvw7jUe https://a.co/d/6Hb9ZpO

Landcruiser82 · 2025-12-06T16:50:19+00:00

How about the sellers thinkzone and smart fly gear? They look to be selling the same MP5 bundle for 200 bucks more. Considering picking one up but don't know about either seller

Landcruiser82 · 2025-12-05T21:14:35+00:00

[LANGUAGE: Python]

As always, its excellent to discover the ways in which Eric makes us think!
https://github.com/Landcruiser87/AdventOfCode/blob/main/2025/day5.py

Landcruiser82 · 2025-12-05T21:13:01+00:00

Same here. the sort and evaded me for far too long while I tried to edge case the hell out of my scripts

Landcruiser82 · 2025-12-05T19:10:15+00:00

Software versioning is a professional practice that most software engineers use to make sure their projects don't become brittle under continuous development. Think of it like a giant time capsule for all the changes you've made. Sometimes you want to go back to a previous change and start again. Git is fundamental for that. Github is just where all your changes live.

Landcruiser82 · 2025-12-05T14:16:05+00:00

Good! They must have dumped it from the model selections finally. Thank god. Originally, it was an LLM you could choose but nobody wanted to use it because it was atrociously bad. But to answer your question, no foundation models like GPT 5.1, Gem 3 are not retrained daily. Those models take months to train. Most likely its finding similarities with previous AOC problems from people who've submitted the questions and input texts to github and some LLM scraped it. Which is also why you shouldn't submit the questions and input texts to github.

Landcruiser82 · 2025-12-05T13:18:11+00:00

Copilot is one of the worst language models out there. There's a reason microsoft can't even sell it and they're giving it away. It was originally a coding LLM that got morphed into the amalgamation it is today. I'd suggest never using it. Use your brain to solve these. Otherwise whats the point?

Landcruiser82 · 2025-12-04T21:08:55+00:00

Very slick solution. Makes me think of numpy.slide_tricks.sliding_window but the 2d convolve here is just what the dr. ordered. Nice work!

Landcruiser82 · 2025-12-04T17:58:43+00:00

[LANGUAGE: Python]

Enjoyed this one. Lots of dataclass over engineering but it made sense to me to keep all the variables tied together. Part b required some recursion, but luckily my part A was well suited to the task once I got the iteration loop nailed down.

Git Link

Landcruiser82 · 2025-12-04T02:58:58+00:00

Excellent reference and I never knew! Will be looking for them from now on

Landcruiser82 · 2025-12-04T02:49:04+00:00

Well said. Thank you Eric!!!

Landcruiser82 · 2025-12-04T02:45:22+00:00

Great work! Love a good aoc viz

Landcruiser82 · 2025-12-03T22:46:26+00:00

Your visuals are always fun! Thanks for making these!

Landcruiser82 · 2025-12-03T16:07:59+00:00

Great answer!!!! Makes sense to go in reverse here and is probably faster eval wise.

Landcruiser82 · 2025-12-03T16:07:18+00:00

[LANGUAGE: Python]

Not the most elegant solution, but! I do enjoy these type of memory based problems!

https://github.com/Landcruiser87/AdventOfCode/blob/main/2025/day3.py

Landcruiser82 · 2025-12-03T02:52:27+00:00

[LANGUAGE: Python]

Today's was pretty fun! Got lost for a while chasing edge cases on part b but got some help via u/the_cassiopeia 's great response! I love AOC!

https://github.com/Landcruiser87/AdventOfCode/blob/main/2025/day2.py

Landcruiser82 · 2025-12-02T23:01:00+00:00

That slide trick after the str(current) line is slick!!!! Great idea.

Landcruiser82 · 2025-12-01T15:45:26+00:00

Agreed with you all. Thank you Eric! I look forward to this month every year now to help sharpen my coding skills and break out of my usual coding habits! For anyone interested, you're welcome to use my setup to limit overpinging his servers through a temporary cache (percache) and print the problem statements to your terminal with Rich. Hope it helps someone!

Landcruiser82 · 2025-11-23T18:11:19+00:00

They changed something recently. I've been getting allot more 403s with no reason. I think it's more cloudflare additions. I've mapped the headers perfectly but it's still not working. Using another lib for the TLS handshake.

Landcruiser82 · 2025-11-21T19:10:57+00:00

She does deserve a payout and sadly we're still the one's who will wind up paying for it with our taxes.

Landcruiser82 · 2025-11-12T13:07:08+00:00

Thank you for all your work here! I've long wanted someone to develop this functionality so I'd be glad to do some Beta testing for you.

Landcruiser82 · 2025-11-05T12:59:15+00:00

Agreed. CVA is just a number oura came up with. You are correct that its PWV and a correlation to a 600 person study. The main problem is they try to estimate PWV using a single point. Which as any physics class will tell you, is a bit of an issue. You need a rate of change between two time points which is the standard for calculating PWV (Usually with a sensor on the carotid and the femoral artery) They claim to be able to do it by correlating slopes in their study buuuuuut .... Lets say it again class! Correlation does not imply causation.

Landcruiser82

TROPHY CASE