This piece was originally published in Mere Christianity.
Jacobs is not the first person to criticize the lack of specifics in that essay (which was largely an editorial decision - what Compact published was half of the length of the original draft). And so let me not mince words here.
There are largely two points of disagreement. The first is the question of what the boundaries of “conserving” a tradition are. The second is the question of why technology renders traditions void.