ubasu

The Trader Joe's at University and MLK is very recent, only since 2010 [1]. It used to be an auto-parts store before. Perhaps it used to be a grocery store back in 1955?

[1] https://www.sfgate.com/bayarea/place/article/Complex-houses-...

Because WWI and Nazi Germany drove the best scientists from Europe to the US?

To put it in terms of what the audience here can relate to:

multiplication is an overloaded operation, or in more modern terms, it is doing multiple dispatch, depending on whether the input is a whole number or integer or rational or real or complex