In case you don't won't read all of this. It's about a professor telling a student about how God is not real. Then the student burns the professor wrong (is was an amazing burn!)The student was Einstein😱.
When a “bird’s nest” of thread appears … the likely culprit is your upper thread tension. If loops appear on the underside of the fabric, the upper thread tension may be too loose. If knots appear on top of the fabric, the upper tension may be too tight.