The talents in the Slope are quite different from regular TFT. First, many talents are less expensive, so PC's memory (mIQ) will stretch further and players will be better able to 'multi-class'. Second there are considerably more talents so PC's will be able to specialize further.
Some talents are listed with costs like this: Scholar (2+). The '+' means that more than two points of memory can be spent on this talent. Each additional mIQ spent on the talent gives you a +1 modifier when using that talent. Additionally, if two characters are making a contested roll, the character with the most memory spent gains a one die advantage in that contest. Several talents give specific bonuses for spending extra memory on them.