In act 4.3, why do brutus and cassius go into brutus’ tent to argue instead of staying out in the open?

In this scene, Brutus and Cassius disagree on questions of honor. The two disagree on how far they are willing to go to gather money that will allow them to pay their armies. However, their disagreement comes from the fact that the two of them have a different understanding of the values that guide them, and what honour means. However, the argument takes place in a tent, as the two worry about arguing out in the open. They believe that this would show the divisions that exist between them, and make their armies less willing to fight.

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