90% of startups fail. Then 0.9^7 < 0.5, so on average your 7th startup is the one that succeeds. If the average startup lasts a year or two, then you better sta

90% of startups fail. Then 0.9^7 < 0.5, so on average your 7th startup is the one that succeeds. If the average startup lasts a year or two, then you better start failing now.