@Santaclaus Once Upon A Time some students put together a computer dating system as a Rag Week stunt (1970s, using the university mainframe).

As there were no concepts of "security" or "hacking" in those days, it was easy for me to find the code lying around on the mainframe and make a teensy change.

As written, what it did was simply match the answers the punters had given to the survey questions and find the best matches, then deem them to be couples. I just switched the logic so that it found the *worst* matches.

Sadly I never found out what effect, if any, my change had had. I could hardly go and ask the organisers without giving away what I'd done.

Hey, if anyone reading this ended up married as a result of using this system can you let me know please?