See also rubberducking [1]

I've seen people solve their own issues by asking me / telling me about something and finding the solution without me having the time to reply numerous times.

Just articulating your thoughts (and using more of your brain on them by voicing them) helps a lot.

Some talk to themselves out loud and we are starting to realize it actually helps.

[1] https://en.wikipedia.org/wiki/Rubber_duck_debugging