Strange assembly of drain

I seem to work good, but why!

Why not? Except for a slight negative horizontal slope, it’s all there. No biggie.

FYI… before I start getting emails, phone calls, and posts telling me I’m a dumb-a-s-s… I KNOW it’s not right and should be corrected by a qualified person!

(Some peoples has no sense of humor)!

If the house flips on it’s side the sink is still trapped.