Fifteen minutes of commitment is harder than you might think.
It's an engagement. What got me thinking about commitment or engagement in a tanda was a conversation with a man I met at a training seminar. After a few days of conversation, I asked him if he and his partner danced. He said he had no partner. "Something is wrong with me. I just can't commit." That hit me hard. It seems like commitment was sadly unreachable for him. My automatic "fixer" mode kicked in, and I told him he should take up tango. I suggested, "The commitment to your partner is for only fifteen minutes. It's easy!"
Then I realized that was a really big lie. It's not easy at all.