When Lily's mother is struck by a hit and run, "Bug" references Einstein's relativity to calculate the velocity of the car. Relativity effects would be insignificant (14 decimal places). Newtonian mechanics is more than sufficient to calculate the velocity of an automobile, especially for the purpose at hand. Bug wasn't trying to be accurate. Seely got Bug mad when Seely said he knew accident investigation better than Bug. Bug was spouting techno-babble in order to confuse Seely.