What is the main weakness of globes?

if you mean globes as in a globe of the world model, then the weakness would be that our worlds layout is constantly changing. Therefore globes are not entirely accurate, especially if the globe is 20 plus years old

Explanation:

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.