Animal Checklist: a wildlife list without the paperwork
A free animal checklist for the species you have seen. Search names across languages, keep a simple personal list and move it between devices without an account.
Blog
Products, decisions and lessons from building independently. Notes by Arne Kellmann.
Blockquote: the answer your website forgot to give
A polished page can still leave basic questions unanswered. How Blockquote’s page audit helps find unclear claims and improve the explanation.
EcoAloha: a good day trip starts with the return ferry
A Pfaueninsel day trip shows what useful travel planning needs: ferry timing, a realistic route and the details that decide whether an outing fits.
NowYourLink: what a single advertising slot changes
One homepage slot, one daily auction. How NowYourLink works, what a winning bid buys, and how I would decide whether a placement is worth it.
I gave 40 prompt injections to my own AI factory. Here is the scoreboard.
An autonomous chain builds and merges my code. So I spent an evening trying to hijack it through issue text, and scored a text-free model as the bouncer. 40 attacks, 40 real issues, every number.
The slow model was right more often. The fast one made more money.
I replayed one day of Bitcoin, tick by tick, through Jev, GPT-6 Astra and GPT-5.4 nano. Same state, same question, real latency. What 2.3 seconds of thinking costs when the price is already moving.
Your pipeline doesn't need an essay. It needs a probability.
I ran 74 real code reviews through Jev, the model that never writes text, and wired the number into the merge gate of an autonomous chain. The numbers, the rule that keeps the model off the merge button, and where the hype gets it wrong.