"Joshua B. Lilly" wrote in message
You memorise the openings, then you become familiar with them (beyond rote
memorisation), then you grow capable of handling deviations "out of book"
because your foundation and general positional familiarity is so strong.
you try that stuff with someone truly familiar with the opening being
(built on the foundation of initially beginning with memorising the
opening), you will get inferior or losing positions.
Just what is the ECO or other name of 1. e4, 2. ke2, 3. ke3 with which
there is someone truly familiar with the opening?