Trouble and strife
I am not in IT but did some Basic at school submitted by puch tape/teletypewrier/acoustic modem that took telephone handset. Thena one week Fortran course at university - hand punch machines to submit punch cards etc.
Anyway mid eighties and the trouble and strife works for very big US vendor of missiles etc in a Mayfair representative office and they buy her an IBM PC yes an original with twin floppies and Word Perfect.
Anyway she complains that she gets all her pages repeated so a letter file when opened has multiple copies of the file.
One day she tells me 64 pages, so I deduce a power of 2 involved
Turns out when closing the file it asks "do you want to save a copy" and if she clicked yes, it appended a copy of the open file to itself thereby doubling each time.
Back to the steel and concrete engineering. You know where you are.