satoshi: https://bitcointalk.org/index.php?action=profile;u=3;sa=show...

adam back: https://bitcointalk.org/index.php?action=profile;u=101601;sa...

page through each of those profiles and search for the following strings:

")." "(i" "(e" "nor"

you find:

1. adam back is constantly writing full sentences in parentheses with a period standing outside the end parenthesis. so, for example: "To review it will be clearer if you state your assumptions, and claimed benefits, and why you think those benefits hold. (Bear in mind if input assumptions are theoretical and known to not hold in practice, while that can be fine for theoretical results, it will be difficult to use the resulting conclusions in a real system)."

that is non-standard, and satoshi never does it. when he (very rarely) uses parentheses for full sentences he either (a) (in a few cases) does not use a period at all (which is also non-standard), or (b) (in a single case) he puts it on the inside of the parentheses. back can barely get through a single long post without a full-sentence parenthesis. satoshi very rarely uses a full-sentence parenthesis.

2. back uses "(ie" and "(eg" very often. satoshi never uses these.

3. satoshi never uses "nor." back uses it very often.