Instruct: Classify a given review as either positive or negative.
Query: What was the point of this book?

Why does Poincare get the most attention of all the also rans (although it wasn't a race) assuming this was a major point of the book? "If only" could apply to several other prominent scientists of this era. I skipped the middle because it was too wordy and repetitious. Poincare was more concerned with clock synchronization for reasons of practicality which had nothing to do with relativity and everything to do with signal lag time. Einstein on the other hand was obviously more focused on the constancy of the speed of light and the inconsistencies it created. Some interesting historical accounts (investigation of a mine disaster) did not make up for a weak theme.