The average really isn’t close enough that you only need to consider outliers.
Two generations of 30 year old first time mothers fit into the same time as three generations of 20 year old first time mothers.
Neither of those cases is an outlier, and that’s slip in only two/three generations.
This is facile.
According to Microsoft, about 70% of security bugs they see are memory safety issues.
Yes: if you introduce memory safety, there’s still those 30% of security bugs left. But, well, I’d rather worry about 30% of issues than 100%…
Similarly, I use libraries that eliminate SQL injections unless you really go out of your way.