Technological mistake

When I had the presentation of the investigation ready, I sent the PPT to Dr. Reniu so he could advise me.
Since then I have been asking him about his opinion, but he always rejected to give a clear answer
Last week we had a f2f meeting were I insisted about knowing his thoughts after reading my presentation.
He opened the file, while I was also looking at the screen...........
It seems that I sent him a draft with three slides were I only wrote some ideas, not in order, just to start filling in an emplty slide
Believing that this was something that I was proud of creating, he had i mind to tell me that maybe the best idea would be to stop inmediately, and avoid wasting time

Well, some hours later I could send him the right file, which I expect to be taken into consideration as a starting point ( or as the end point)

The right file I could retrieve from a mail message, because all the files with the same name in two different PC's and in two pendrives were overwritten by the first draft

This means that from now on I will have to be more accurate in the naming of the files, using v ( version numbers ) at the end of the name of the file