It is possible to be coerced by the structure of the problem. See "prisoner's dilemma".

Okay, so far so good. Now corrupt the first 300 bytes of the file. See which one allows you to get the data back. If you are really committed, you might be able to get some back from the Word document, by going in and copying out small sections of contiguous text. From OO, you probably can't. From a plain text file, it is easiest.

Remember, there are tradeoffs to almost every design decision, compression included.