I seem to recall that the Morten Thiokol reps - in trying to persuade NASA not to launch that fateful day - cobbled together (against a stupidly short timeframe) a presentation using good old - handwritten - OHP slides to get their point across. NASA Management seemed to focus on this less than elegant presentation medium as a reason to dismiss M-T's concerns. The rest is, unfortunate, history.
I wonder if that was because the OHPs could be quickly destroyed after the fact with no electronic evidence remaining? After Columbia, electronic evidence was quickly removed - hard drives etc