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Is this sentence correct with regard to commas? Especially around "...let alone attain...". Thank you :)

In a dynamic market, the Central Planning Board would be too slow to significantly approach, let alone attain, equilibrium.

Barmar
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user146808
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  • Yes, that's the correct use of the commas. – Nathaniel is protesting Nov 10 '15 at 14:02
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    Let alone introduces a comparison clause, and virtually always requires a phrase break, in the form of a comma, in print. – John Lawler Nov 10 '15 at 18:29
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    @FumbleFingers It's not quite the same. That question asks what "let alone" means, and takes it as a given that it's surrounded by commas. – Barmar Nov 10 '15 at 22:20
  • @Barmar: In OP's example, let alone attain is effectively a parenthetical "interjection". I expect we've got questions dealing with commas and parenthetical phrases, but it's really just general reference. – FumbleFingers Nov 11 '15 at 01:38

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