The Old Ones did not disappear into some theoretical universe-spanning abstraction.

There are two ways in which a theoretical abstraction can be matched against the actuality which it claims to account for.

Yet neither are we attempting to understate the value of theoretical abstraction.

I had enough personal speculations not to have to worry about theoretical abstractions on the reconciliation of space-time theory with time-diving observations.

Viewed as a theoretical abstraction, Dr. Taylor's work had a cool, compelling elegance.

But opposing stem cell work seems to close off research that could alleviate human suffering for the sake of a theoretical abstraction.

Accounting has generally been oriented towards practical knowledge as opposed to theoretical abstractions.

But there's the theoretical abstraction about the way things should work and then there's the way things really do work.

Engaged theory works across four levels of theoretical abstraction.

I never did go by a lot of theoretical abstractions.