Full Idea
Boolos asks why on earth compactness, whatever its virtues, should be definitive of logic itself.
Gist of Idea
Why should compactness be definitive of logic?
Source
report of George Boolos (On Second-Order Logic [1975]) by Ian Hacking - What is Logic? §13
Book Reference
'A Philosophical Companion to First-Order Logic', ed/tr. Hughes,R.I.G. [Hackett 1993], p.245