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Hi all, I put together a reference site collecting product-management principles, heuristics, and “laws” that come up again and again when discovering, building, launching, and improving products.

The idea is to focus on product work: strategy, discovery, execution, metrics, leadership, go-to-market, process, and users.

Each law includes the core idea, its source, how it manifests in practice, and related concepts. There is also a small quiz mode for reviewing the ones you’ve read.

I’d love feedback from PMs, founders, engineers, designers, and anyone who has worked with product teams:

What laws are missing? Which ones are wrong or overrated? Which one have you learned the hard way?