the.com/survivorship
the data you see is the data that lived — the dead don't fill out surveys.
means a bias where you judge success by studying only the winners, ignoring the failures that vanished from the record.
from crystallized from wwii statistician abraham wald, who studied bullet holes in returning planes and realized the panels with no holes were the ones actually worth armoring, since planes hit there never came back.
wald's insightarmor where the surviving planes had no damage
self-help trapsuccessful dropouts get books, failed ones don't
finance versiondefunct funds vanish, inflating average returns