Abstraction is as concrete as any other process 
Just a question of practice. See tutorials here:
Type I & Type II consolidation:
http://www.econometric-wave.com/quiz/dji_011203_for_021203/
http://www.econometric-wave.com/quiz/dji_050104_for_060104/

Just a question of practice. See tutorials here:
Type I & Type II consolidation:
http://www.econometric-wave.com/quiz/dji_011203_for_021203/
http://www.econometric-wave.com/quiz/dji_050104_for_060104/
Quote from plumlazy:
Dag gone Harry - your charts are as abstract as you are![]()
.