It does no such thing ! You may want to read about philosophy to learn what existentialism is.
To my knowledge atheism is not philosophocal, therefore existentialism, which means existence, is moot. We do believe that humans, religious or non, have problems. I don't really assume they exist, but research through independant studies conclude humans have problems, minor and major.
Sense and to solve human problems.
Because those ancestors which could not solve problems mostly died before actually becoming ancestors.
the desire to meet human needs and solve human problems
It does not solve problems the Hubble was just made out of human curioity to explore space and to see what is out there inohter words to explore space to answer our questions.
solve problems Increase human knowledge... Duuh
No, on their own computers can not solve the problems of humanity, only humans can do that. However, computers are powerful tools that can be used to model various aspect of the real world. If human have managed to to get these model correct then computers are now fast enough to calculate what these models will predict in the future. Armed with these predictions humans may be capable of making choices that help to solve human problems.
Existentialism has nothing to do with problem solving. We use logic and scientific reasoning like anyone else.
reformation
Logic
They used different approaches to solve problems in Africa- APEX Yeet Skeet
Probably not. Humans have a knack for creating more problems for themselves.