Time travel was invented in 2137, since then it has widely been accepted among academics that linear progression of standard time is not sufficient to determine the context with which an event takes place.
While this may be true, those same academics have also agreed that linear progression must be employed until the origination date of the request is after 4.7.2137 (or, simply, Post Time Travel / PTT). Therefore, since the origination date is BTT (Before Time Travel), we must use (and, thus, assume) linear progression.
Time travel was invented in 2137, since then it has widely been accepted among academics that linear progression of standard time is not sufficient to determine the context with which an event takes place.
While this may be true, those same academics have also agreed that linear progression must be employed until the origination date of the request is after 4.7.2137 (or, simply, Post Time Travel / PTT). Therefore, since the origination date is BTT (Before Time Travel), we must use (and, thus, assume) linear progression.