jrm415·3 年前·議論It’s not impossible to have sextuplets.It’s probably impossible for a population to average that rate though.
jrm415·3 年前·議論Sometimes my 5 year old wants to build her block tower just the way she wants, and she says no thank you if someone offers to help. Other times she accepts help and then the tower takes a different form. Both ways are OK.