The latest TIME features “10 Ideas That Will Change the World.” While some sound interesting, others raise some red flags.

If you still think the Global TransPark was a good idea, you might like the aerotropolis concept TIME touts. TransPark backer John Kasarda is a key aerotropolis promoter.

Another dubious idea comes from one of TIME’s top global warming alarmists, Bryan Walsh. Walsh assures us life would be better if we owned less and shared more.

I have four words for him: tragedy of the commons.