I think someone without a detailed grasp of spacetime diagrams should be able to answer problem 1, as long as they know the following principles:
Gur eryngvivgl bs fvzhygnarvgl
Ab fhcreyhzvany fvtanyvat
I think someone without a detailed grasp of spacetime diagrams should be able to answer problem 1, as long as they know the following principles:
Gur eryngvivgl bs fvzhygnarvgl
Ab fhcreyhzvany fvtanyvat