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by Ecio78 4773 days ago
The advantages of this approach are enormous - it helps you understand what you're looking for..

That's true, but keep in mind that the disadvantages are relevant too: you lose maybe 10x time doing something you were not supposed/skilled to do, so your time-to-market is way longer AND you're not doing other stuff that are needed (customer/product validation - marketing - fundraising etc..)