in the comments there, i showed a misunderstanding of a concept of lean startup, which, as far as understand, keeps us from paying that big price (like selling

in the comments there, i showed a misunderstanding of a concept of lean startup, which, as far as understand, keeps us from paying that big price (like selling arm and leg and cry in the pillow) for an idea by easy pivoting, inexpensive concept proving and even failing fast. if Dave McClure doesnt bother to enlighten me there, maybe i'll get some info here? i personally support the OP and have the same attitude to my venture.