Learn English – Multiple sentences inside parenthesis

parenthesespunctuation

I have read the few questions about punctuations in parenthesis, but I think none of them answers my question. I've looked at:

If I have the following sentence structure (modified from one of the earlier question), is the following punctuation correct? Should I put the period within the parenthesis since it is a full sentence, or don't put it because it is still going on with the main sentence?

This morning I was distracted by a plane (or was it Superman? I'm not very sure.), so I tripped.

Best Answer

I would punctuate around parentheses the same way as dashes.

With dashes, the sentence would look like this:

This morning I was distracted by a plane — or was it Superman? I'm not very sure — so I tripped.

Therefore, with parentheses it would be:

This morning I was distracted by a plane (or was it Superman? I'm not very sure) so I tripped.

That said, I prefer dashes here, because the middle phrase clearly relates to the topic of the sentence. Parentheses are better reserved for signaling a stronger digression from the main topic, e.g. —

This morning I was distracted by a plane (they're built in a factory the next town over) so I tripped.