A person who thinks they are good at optimizing their electronics, computers and other equipment, but suffer severely from confirmation bias. Bientists
"buy into" ridiculous, half-baked and often overkill solutions usually out of a combination of impatience and arrogance. Rather than doing any verifiable research or empirical experimentation, they base their techniques on correlations, isolated incidents and things they read once on a forum, usually posted by other bientists. If a confirmation bientists finds another confirmation bientist with the same ideas, their ignorance is locked in for life. See also: bientist
Any confirmation bientist will tell you that disabling all the services in Microsoft Windows and turning off automatic updates will make everything run better and faster with minimal internet lag.