Rob Walling says (paraphrasing): "the goal of validation is not to get to 100%. That's not really possible. The point is to reduce uncertainty/risk. You can maybe get to 50-60% at most. The more you do to validate, the better your position is" << this is from one of his recent podcasts but can't remember which.
So I think they are saying the same thing but Jason Fried has a more controversy provoking style
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Rob Walling says (paraphrasing): "the goal of validation is not to get to 100%. That's not really possible. The point is to reduce uncertainty/risk. You can maybe get to 50-60% at most. The more you do to validate, the better your position is" << this is from one of his recent podcasts but can't remember which.
So I think they are saying the same thing but Jason Fried has a more controversy provoking style
got it - so you should validate, but ultimately it's all a guess makes sense