Elon Musk claims that reducing the birth rate is not a solution and it will not work, so making the world multiplanetary is necessary but he is forgetting or ignoring by his stupidity that not millions but billions are required to go outside of the world. So only billionaire will be able to travel outside of the world, at the current situation, there are only a few billionaires out of 8 billion people, even there are not much millionaire and millionaire can never afford to visit outside of the world as a tour will cost around million of dollars. So if we assume that Musk has had succeeded to make the mars a place where life can exists, then how many billionaire will travel? will we be able to send half of the world there? or 190 million people out of the 320 million from the United States? Evacuation of millions out of 8 billion will not affect the earth even, and nor every Chinese a billionaire to afford the evacuation. So we can say this that this is just a bogus plan, It will result at the end to destroy Tesla and SpaceX (resulting 100% loss of Tesla and SpaceX shares) Because is it possible that we can make everyone in the world a billionaire through blockchain? And if the current inflation growth rate is to be relied upon, it is still not possible in the next ten years. If we increase this inflation rate by a thousand times or make people's salaries in millions then it is possible. And it is also possible that we will be killed by global warming in the next forty years if we do not do this.
In light of current circumstances and resources, it seems a bit impossible, but in the future, yes, it might be possible. We knew that there was a time when flying in the air seemed to be impossible in the past for the people of that era. But now it's a regular thing. Similarly, we should wait until the future reveals itself to us.