This was my first thought as well. Is the file size really that precisely deterministic from a mammoth program like Word given different dates, machines, versio

This was my first thought as well. Is the file size really that precisely deterministic from a mammoth program like Word given different dates, machines, versions, etc? Given that Musk is not the most reliable narrator, to say the least, I'm skeptical of this story. I'm sure he sees plenty of utility in appearing omniscient to frighten potential leakers.