This is where Common Lisp comes in: through macros you can expand the language to include the abstractions your application needs. PG talks about this extensive

This is where Common Lisp comes in: through macros you can expand the language to include the abstractions your application needs. PG talks about this extensively. The issue is that doing this requires a deep understanding of the language, and many programmers are not able to grasp what the CL toolbox gives them.