This cycle will reset itself because as individuals' work for public benefit becomes less praiseworthy, supporters' level of commitment to collective action projects will decrease. With the decrease in support, many will return to private interests, which with time resets the cycle. Supporters of Hirschman's model insist that the important factor in motivating people is that they are compelled by a leader's call to altruism. In John F. Kennedy's inaugural address he implored the American people to "ask not what your country can do for you; ask what you can do for your country." Some economists (for example, Milton Friedman) find these calls to altruism to be nonsensical. Scholars like Friedman do not think the free-rider problem is part of an unchangeable virtuous or vicious circle, but instead seek possible solutions or attempts at improvement elsewhere.