Insanity is doing the same thing over and over again
/under the same conditions/ expecting different results.
The «lesson» you talk about is again not a deduction but an induction. Engineer your system properly, and it will have to work.
If at first you don't succeed, call a hacker. They must be somewhere.
Incidentally, going to the context: the issue is, as you indicate, that "said people cannot resist corruption", well, stop giving power to "«people»" then - to those embarrassing liabilities I hear about. (They probably terrorize me more than you.) Which by the way, is one of the actual codified ways to tackle the problem (since at least 3800 years).