I choose to interpret it as: How do you know that *the author* was not named after ray-tracing?

Which is amusing :)

You missed the joke, so let me ruin it by explaining it:

What if Ray the person was named after ray-tracing by his parents?

Plot twist: Ray Tracing was the name of a person that was very important to both of them and unfortunately passed away, so they named their son Ray as a tribute.

I can confirm that. And Ms. Litre went to the same school and was best friends with Mr. Tracing. [https://en.wikipedia.org/wiki/Claude_%C3%89mile_Jean-Baptist...]

Ah shit, I was That Guy on the internet, sorry. I guess it happens to everyone eventually.