system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How come forward motion helps keep you upright on a bicycle?
gpt
The gyroscope explanation is not what really keeps you upright on a bicycle. It certainly can play a part, but it is not THE reason.

When you ride a bike you are steering the front wheel in order to keep upright. 

If you are falling to the left, you steer left to put the bike back underneath you. Gyroscopic precession is not required. You need to be moving forward for the steering to have any effect.

An example is those small Razor type scooters. They have very tiny wheels with virtually no gyroscopic force - yet you can ride them as long as you are moving forward in order to steer the front wheel and keep it underneath the rider.