Oh Molly!

[Terrance]

Terms communicated: 

David is an Architect. 
I'm a Carpenter. 


The blue ink marks he puts on the rolled paper he gives to me are in a
language I understand. It's not just a matter of professional courtesy.
He wants me to understand his drawings. There is a mark for "DOOR" and
there is a different one for "Window" and so on. I know these symbols
and so does he. So do other architects and carpenters. But he can use
whatever marks he pleases so long as he uses different ones to represent
different things and so long as he doesn't mix and match them as he
goes. 
As long as he uses them consistently, I'll construct a building from his
drawing. 


Ideas Represented: 

Now, when I look at David's drawing I notice that a symbol representing
the idea of "a large bay window"  is on the west side exterior wall of
the structure and it is between an exterior  door to the kitchen and
another window on the same exterior wall in the kitchen. No problem. But
if we move it, say to the opposite interior wall, we have the
representation of a different idea. 

Does this make sense?