[bluGill]

Making a brick laying robot is easy. I'm happy to do that if you want to fund my mid-life crisis... Note that I did not promise my brick laying robot can effectively compete with human break layers on cost. I fully expect my robot to be at least double the cost of humans doing the same work, and it will be less flexible than humans as well (meaning you need a different robot for different buildings)

[rootsudo]

How would it be double the cost if it can work day and night and on holidays and during bad weather and not have strikes?

[bluGill]

Double is probably a low estimate. There is a lot of engineering required in the robot. Much of the effort is setup, someone still needs to bring it to the site, and feed the blueprints in. Cleanup is also a lot of the cost. Not to mention mortar is made of sand which is abrasive and will wear it out fast meaning lots of maintenance work.

Working day and night isn't helpful as the limit to speed is waiting for the mortar to cure before doing the next row. (Generally you do about 5 rows and then wait a day)