Caffeine blocks adenosine, a natural tranquilizer, so the brain is over-stimulated, heightening intellectual activity.
Mocrosoft word tells me this is a fragment. I see nothing wrong with it, do you?
Top answer
Aargh! If you change "heightening" to "which heightens" I suspect Microsoft will stop complaining. But Microsoft is definitely over-the-top here.
— Rommie
Aargh!
If you change "heightening" to "which heightens" I suspect Microsoft will stop complaining.
But Microsoft is definitely over-the-top here.
Even in formal writing, the sentence as you wrote it would be fine (in my opinion).
Please understand that (unlike I) Microsoft Word is not an artificial intelligence - it's just a simple, stupid robot that looks for pattens of words and often gets it wrong.
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If you change "heightening" to "which heightens" I suspect Microsoft will stop complaining. But Microsoft is definitely over-the-top here. Even in formal writing, the sentence as you wrote it would be fine (in my opinion).
Please understand that (unlike I) Microsoft Word is not an artificial intelligence - it's just a simple, stupid robot that looks for pattens of words