Google到的，10年還是多少年100萬人要去火星生活的，我們活的好一點，應該有機會看到

In January 2022, in a series of posts on X, he said: "We should be much more worried about population collapse," following up with: "UN projections are utter nonsense. Just multiply last year's births by life expectancy. Given downward trend in birth rate, that is best case unless reversed." He then added: "If there aren't enough people for Earth, then there definitely won't be enough for Mars."