If you could bring back one person from the dead for 10 days, who would it be?

If you could raise someone to life, they are full of energy and at your presence at all time, for 10 days. After that, they quickly and repidly fade into light and are gone again. Note: I understand everything is light, I could be scientifically wrong on that.

Whom would they be and why? What would you do in that time?

If you could bring back one person from the dead for 10 days, who would it be?
If you could bring back one person from the dead for 10 days, who would it be?
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