Me and my friend are fixing, renovating old bikes as a hobby. A rule of thumb is that each repair requires watching 2-3 youtube videos first. We are joking tha

Me and my friend are fixing, renovating old bikes as a hobby. A rule of thumb is that each repair requires watching 2-3 youtube videos first. We are joking that people no longer are flying to the Moon because NASA have lost all of the videos of how to assemble a rocket. ;-)