If we could invent a serious AI algorithm that can replace lab technician and drop this cost to $10 and $25 respectively. (Note that every single item in USA such as Cars, phones and bread is damn too cheap compared to mere 30 years ago).The lower cost of blood tests would save thousands of lives each year.

A small efficiency in making bread will save lives and put food on table of more people and improve sustainability of our planet.

It is not about jobs but efficiency. Making things more and more efficient is a moral imperative. It is something we need to do for the future generations.

Secondly, a cashier losing job is not as big a deal as people make it out to be because these people will do something else. Large availability of cheap labor can invent new industries as long as government does no criminalise being poor or skill less. Minimum wage jobs for example make it a crime to have no skill.

In future I imagine human beings with driving skills sitting a automated car simulators and teaching the cars to drive or clicking on images and video feeds to teach computers to get better while receiving am minimum wage.

Losing job is also something that makes a society ant-fragile and robust. Without laying off inefficient arms of the company you will haev a fragile North Korea/ Venezuella like economy.