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What is the difference in meaning in these two sentences?

Is there anything else we will have done?
Is there anything else we could have done?

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closed as not a real question by RegDwigнt Aug 21 '12 at 9:20

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

Thanks; I've undone my comment and downvote. In a question like this one, it's reasonable to mention your own ideas about meanings of examples, and specifically tell responders what you want to know but don't understand. – jwpat7 Dec 6 '11 at 0:16
This question might be a better fit for our proposed sister site for English language learners. Please support it. Thank you. – RegDwigнt Aug 21 '12 at 9:20
up vote 1 down vote accepted

By using could, you ask about something that you didn't do but which was possible. You're asking about the past. By using will, you ask about some future action before another time further in the future. In this case, you expect to do the action.

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