It doesnt matter whether they are at great elevation or at sea level. John Geiger suggests that the brains effort to create a Third Man is not an accident of human brain structure, or a sign of injury in extreme conditions.

VOA: special.2010.02.24

If you think about what ancient food gathering habits used to be like, you see things like this where people are out gathering food that is growing naturally, and you can think about what would-- what sort of conditions this would create and what kind of hardships it would create.

如果你想知道古代食物采集的习惯,请看这张图,人类都在野外采集自然生长的食物,你可以设想到,条件有多恶劣,生存有多艰难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The G20 declaration recognizes U.S.concerns, saying that sustaining economic recovery requires nations to follow through on delivering existing stimulus plans, while working to create the conditions for robust private demand.

VOA: standard.2010.06.27

"What we want to do, along with friends like the Philippines and other ASEAN members is to encourage,urge, persuade the leadership of Burma to enter into this dialogue with their own people-to create the conditions for legitimacy that should be apparent when you have an election, and that is what we are looking to achieve,"

VOA: standard.2009.11.12