so could someone explain the new motive system to me?

[hansthesockmonkey]

supposedly they have takent away all 8 bladder, hunger,environment, fun, etc bars and are replacing them with like 3 mood bars that deal w/ stress vs. fun and such
and instead of want and fears they have like a dream thing now and say you walk by another sim that your sim finds attractive or something and you get a dream to want to know them better
or you're walking by the clothing store and you have a dream to get new shoes
the dreams can become promises too... sim child looks through telescope for first time and decides he wants to become an astronaut... you can make that a promise kind of like locking wants in the sims 2