Weinberg ≠ Wald. Wald's book is great! (For GR, of course, not SR.)

Indeed! I meant that it's good to know Wald is mathematically modern and not encrusted with coordinates. Saves me buying another book :-D

(The comment I replied to mentioned both.)

	▲	senderista 2 days ago \| parent [-]
		I think it does a very good job of explaining the abstract index notation, which is superficially similar to coordinate notation but conceptually quite different.