Checking an A/B test until it crosses p < 0.05 can turn a nominal 5 percent false-positive rate into almost 28 percent. I use a seeded simulation to show how large the damage gets and compare the fixes that keep early stopping honest.

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Not all Python data libraries are created equal!

The post Should AI Developers Make the Switch from Polars to Pandas? appeared first on Towards Data Science.

How to diversify a budget without losing the shadow prices that explain the result

The post The Budget Split That Explains Itself appeared first on Towards Data Science.

I replayed the same 27 real production tasks through two local models, one hardware upgrade apart, to find out what it actually takes to replace Claude as the brain behind a 90-tool personal agent.

The post Can a Local LLM Run My AI Assistant? appeared first on Towards Data Science.