in thread "The Biosingularity": So for comparison, siblings leave a powerful psychological mark which persists into adulthood. If I've known someone for half an hour, I can tell whether they have siblings, and if so whether or not they're the oldest. My accuracy isn't perfect but it's mu... 1y ago (collapse hidden) log in to judge received 7.0 7.0 So for comparison, s (view hidden) log in to judge received 7.0 7.0