@jws If you ask someone how their software works and they answer, "It's complicated", it's a good clue that they don't adequately understand what they have written.
Note: Not a sure fire clue. I had to write a routine that calculated stellar positions by date once and "It's complicated" was the correct answer (Unless the person had a bit of math under their belt)
// @matigo @JeremyCherfas @streakmachine