Although of course Home Improvement was light-hearted comedy, that scenario scares the life out of me on a personal level, for the fear that my own doctoral thesis could somehow suffer that fate!
Absolutely but even then, mishaps can still occur. During my undergrad, one of my classmates was working on her thesis in a computer room and frantically beavering away to complete it before the impending deadline when someone happened to brush past the main power switch for the entire room (which was situated in the most illogical location and prone to malicious usage) and *boom* - everything went dead, including the desktop PC she was using!
The unwitting catalyst for this crisis apologised profusely and offered to help her re-type any portions of the thesis that hadn't been recovered via auto-save but she, remarkably calmly urged them to exit the computer room with haste - for both their sakes. 😂
She still managed to submit her thesis on time but that incident validated my decision from the get-go to take no chances and among many precautions,
always use my laptops on campus: which ironically, the others had scoffed at as unnecessary - on the grounds that the university has ample IT resources.
The scene would've still been plausible - and perhaps even funnier with one spouse castigating the other for not having backups in the first place.