Unfortunately when it comes to elder care, unless you can build humanlike robots, humans are the only viable option. Though there are technologies that could help, but not by helping the elderly, but by helping ensure that those who reach old age are healthier. The technologies are simple, more exercise and better diets.

The challenge is we have created a world where it is difficult to get enough exercise and is difficult for the majority to eat healthy diets. This is where we need to start using technology to change these realities. It is also one of the reasons why we need to change our culture to better push for healthier diets and exercise.

Again, the challenge with immigration as a solution is it only works under the notion that some nations keep having lots of children, which inevitably will not happen as birth rates are coming down all across the globe as nations reach developed status. So, inevitably the world will at some point, likely this century, find itself with a real global birth rate problem on its hands.

It is true, it is likely there are too many people on this planet, but the reduction needs to come gradually not like a bomb. If it comes like a bomb, it will cause chaos and real problems all across the globe. This is why it is better to pre-empt this problem now by fixing the things which lead people to have so few children.

That is that people are being manipulated into not reproducing. So, like said before, this is not about manipulating people or pushing people into reproducing. It's about fighting against people being manipulated into not reproducing, which is what is happening in the developed world - en masse.

This is happening because of societal failures which are especially failing women when it comes to having children. The number of men and women – women especially – who would have liked to have had children or would have liked to have had more children but ended up up not doing so due to either being lied to by society i.e. that they could have children in later life, or due to not being able to afford to, and much more, is an extreme travesty.

The problem is, as we have increasingly fewer children, more of a burden gets placed upon the workforce which creates more pressure on people to not have children so as to avoid leaving the workplace. It's like an unbreakable cycle where the less children we have, the more we need workers and so the more we push people to not leave work to have children.

This is why we need to start working to break the trend now, and create a world where having children is affordable and accessible to everybody, so that everybody who wants children can have children. We should not be living in a world where having children becomes increasingly for the rich.