Close your eyes and imagine the kind of world you would like to see. Now open. What is it like?

In contrast, particularly, to Robert J. Kolker, I would say that, in order to be "perfect", the world would need to be a place where everyone was engaged in doing things that they found to be interesting and exciting. It would need to be a world in which creative people worked and cooperated together in their areas of interest, sharing ideas and inspiration. It would need to be a world where people were encouraged to try different occupations (ways of contributing to society) until they found one that they had a passion for. (And if, after a time, they got bored with that, they could look for something else that both challenged and excited them.)

Also, it would be a world in which people did not hold prejudices of any kind, and all people had the same rights. It would need to be a world in which the only laws were those that fostered trust, cooperation, and the advancement of civilization. It would be a world where there was an understanding of what is truly fulfilling in people's lives, and that understanding was shared and utilized. It would be a world in which no one lived in abject poverty, and no one had excessive wealth or power. And it would be a world in which we understood our relationship to the Earth and all of its creatures.

Perfection is never attainable, but movement toward perfection brings improvement. Having a concept of what would be perfect gives us a goal to strive towards. Of course, having consensus around that goal makes movement possible.