A product can be technically impressive yet fail because it launched before a real market for it existed.

Drawn from what M.G. Siegler said

What these subjects mean

product management What a product manager is for, who decides what gets built, and what happens to that job once delivery is cheap.

innovation Where new things come from and how they spread: invention against diffusion, and being near the factory floor.

What M.G. Siegler actually said

Do you hold this korrent?Do you also believe this?

Shared subject first, then similar wording. They may agree or disagree.