If the script does not yield 20% ROI 18 times out of 20, I will admit that I "lied", and will leave the forum. I will also send a few bits to people who warned against me.
If the script yields 20% ROI 18 times out of 20 (or more)... well, then I guess my point has been proven.
18 times of 20 is 90%. ROI - 20%. Expected value is 1.08. There's a chance of 92.5% to reach so easy target without using any scripts. So, you would not prove anything.