One thing that was taught to me in university related to this, is that in optimisation, "every little bit" does NOT help. This insight applies to everything, an

One thing that was taught to me in university related to this, is that in optimisation, "every little bit" does NOT help. This insight applies to everything, and is the cause of great frustration. The world should know about this law and that optimising the 3% case is useless in any field, if there's an 80% case staring you in the face.