I strongly agree on the last point about early validation, albeit with two exceptions: when you're marketing a product you want to sell and want to generate hyp

I strongly agree on the last point about early validation, albeit with two exceptions: when you're marketing a product you want to sell and want to generate hype, or your product requires early feedback. I've kept things hidden to keep myself motivated only to find I was left with the horribly unmotivating task of shudders marketing. Also, my friends who I thought would love it had fundamental changes they'd want to find it useful.