xxx: Try to recall the school and the number of people who could understand math and geometry perfectly. Usually 1-3 of the whole class, and most often 1. These are potential programmers.
yyy: No, these are potential gods who will model turbulent streams. And potential programmers are those who know that in the summer, warm clothes should be placed in the closet further away, and light clothes closer, this is sufficient level of logic to be able to write the sorting with a bubble.