The first thing that springs to my mind is the saying carpe diem.
That's no more prevalent in sport than when you're facing something that's been impossible to achieve. You only get a brief chance to create history and seize the day.
The way Argentina fought their way through the test in New Plymouth they got themselves into a position where they had the All Blacks on the ropes but they didn't go for the knockout punch.
When you are faced with that decisive moment it is about who dares wins. With Beauden Barrett in the bin and Argentina ahead they had the chance to put the foot on the throat with a penalty five metres out from the All Blacks line. They opted for the easy option to take the shot, and the rest is history.
When Kieran Read was standing under the posts with his men reduced to 14 men and Argentina pointed to the posts he was probably relieved. If he was staring down the barrel of seven points, it would've been a different scenario for the All Blacks to dig themselves out. You don't get many chances against the All Blacks. I think Argentina had that moment and they bottled it.