Singularity doesn't mean physically impossible stuff will happen. I don't think travelling in time to the past is possible even for a super advanced AI. Future time travel, maybe tho.

You do need to keep in mind that the amount of time between some jobs being automated and ALL jobs being automated is huge.

A basic example is that automating at least parts of text based customer support is probably very close, but automating a plumber is very far away.

AGI has the potential to create even more mentally stimulating tasks by enabling humans to work alongside intelligent machines to achieve even greater results. AGI can be used to augment human abilities, enhancing our problem-solving skills and enabling us to tackle more complex challenges. This creates a new frontier of exploration and discovery, as humans and machines work together to push the boundaries of what is possible. For example, maybe the thought of creating a neural network for the AI in your game never crossed your mind, but AI could help you that. Its still stimulating because its likely the AI won't get it perfect on the first try and you will need to guide it.

Another anology is how coding used to be way more tedious 50 years ago and high level languages made it much easier. AI can allow you to focus on the creativity parts and the important parts, and put less focus on the annoying parts.