> the default settings have been tweaked by domain experts > over decades to be reasonably good for the general case. Yes, but look at default configuratio

> the default settings have been tweaked by domain experts > over decades to be reasonably good for the general case. Yes, but look at default configurations such as those of Apache and Mysql - you'll find that the default settings have been finely honed for environments that were common ten years ago... Even settings need updating - optima are moving targets.