It's one scientist's job to determine and report that your car is going 127.3mph
It's another scientist's job to determine and report that there is a 10" diameter tree 63' ahead and a brick wall 87' ahead
Neither of them knows anything at all about the other's specialty. And both of them are completely useless at answering "what's going to happen in 5 seconds? whats going to happen in 10 seconds?"