it was hard to find a point here. it seems to boil down to "hey, don't forget about capital efficiency!", which is not so helpful. the importance of captial ef

it was hard to find a point here. it seems to boil down to "hey, don't forget about capital efficiency!", which is not so helpful. the importance of captial efficiency is already highly scrutinized because startup success is most sensitive to growth rate (of profit, aka income minus expenses). the challenge is that many early stage startups can't be measured on profit, so proxy metrics (like user growth) are used to forecast future profit and growth instead. even revenue-oriented startups try to be measured on proxy metrics because investors so easily misconstrue early capital efficiency metrics as characteristic of future performance (this happened to my startup, on very early unit economics).