It's a good write-up of a progression on that kind of thing. But it doesn't necessarily take years to go that route. If you understand how thinking works, things like postulated vs experiential knowledge, then learning these types of things can be very, very fast.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
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"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon