[Jack000]

validation is noisy, and can be just as hard as building the the thing.

If you put up a landing page and people immediately start buying, great. What happens if you get no conversions? Is it the product, market, your marketing? How much effort/money do you put in before you say it's a negative result?

marketing is an adverse learning environment, and beginners typically misattribute the cause of failure. It's difficult to learn incrementally via trial and error, unlike coding.

the best way to mitigate "no market need" is to solve an existing pain (that the market is already buying) rather than inventing new ones.