Ironically, Mr. Tsipras himself seemed a bit nervous when presented with the idea that Greece could or should leave the Euro zone. If that happened, it would take away his biggest bargaining chip.

Finally, Mr. Tsipras failed to convince people on a fourth point: that he has a positive vision for growing Greece’s economy. Whether Greece stays inside the Euro or reverts to the Drachma, it will still need to make major changes in its economy to attract foreign investment and boost its exports.