I overheard this snippet of conversation today at Wendy’s between a man and his son, about 8 years old. They were sitting behind me, so I don’t know what they were looking at.
Son: Why did they write this number out as 1001 instead of 1K1?
Father: I don’t know.
Son: I think I know why.
Son (not joking): 1T is one trillion. 1M is one million. You can’t use 1K because there’s no such thing as a killion.
Can’t fault the kid’s logic on this one.