If it is true that...

Great work often arises when someone believes they can improve upon something existing

and

Understanding a field thoroughly is necessary to identify what requires improvement

Then it must be true that...

The formula for excellent work involves having exacting taste and the ability to satisfy it

If it is true that...

Taste is not subjective and can evolve over time

Then it must be true that...

The formula for excellent work involves having exacting taste and the ability to satisfy it