"An (increasingly long) while back" is more grammatically correct because the pa...

atombender on Nov 19, 2014 | parent | context | favorite | on: Did The Harappan Civilization Avoid War for 2,000 ...

"An (increasingly long) while back" is more grammatically correct because the paranthesis is not a separate sentence; it's part of the grammar structure of the sentence as a whole.

whtrbt on Nov 23, 2014 [–]

Yes, that way of writing it is actually the least disruptive to my reading.