Comment by ben_w
> write long random number on it
Human brains when generating 'random' numbers: https://xkcd.com/221/
> Once a month company publishes one giant zip with all the monthly result where you find your file by that random number you wrote.
Given how much of our appearance is due to genetics, that's basically all the harm with none of the convenience.
>Human brains when generating 'random' numbers
Fortunately, contemporary humans have access to computers, which can generate random numbers for them free of charge.
>Given how much of our appearance is due to genetics, that's basically all the harm
I can't fathom your concept of "harm"; and neither, I think, would any prospective customer of this service.