"They have to find a way to live together at least in the short run. SCAF can't destroy the Brotherhood and the Brotherhood can't destroy SCAF," Hamid said. "So there has to be an arrangement."
Morsi's biggest test will be on the economy, which has fallen apart since the revolution. Little is expected to change in the realms of foreign policy or sweeping social changes that many fear with an Islamist administration.
"I have no rights, I have duties," Morsi said in his victory speech.
In some of his most policy-specific language, he said Egypt wouldn't interfere in other countries and warned others not to interfere in Egypt. He also vowed to maintain all international agreements, a clear reference to the 1979 peace deal with Israel.
Morsi's energetic supporters in Tahrir Square vowed to maintain the pressure, threatening continued public protest if the military council doesn't loosen its grip on power.
But for now, at least, the post-revolutionary period's biggest hurdle has been cleared with none of the bloody violence that has been seen during the revolution and since.
"We didn't know where the army would take us after 18 months," said Sayed Hussein on Tahrir. "But now, we know where we are. Now we feel we can breathe now."