[deltaninenine]

It's arrived at through induction. Induction is logic involving probability. Probabilistic logic and predictions of the future are valid logic that has demonstrably worked in other situations so if such logic has a level of validity then induction is a candidate for refutation.

So we know a human of human intelligence can take over a humans job and endanger other humans.

AI has been steadily increasing in intelligence. The latest leap with LLMs crossed certain boundaries of creativity and natural language.

By induction the trendline points to machines approaching human intelligence.

Also by induction if humans of human intelligence can endanger humanity then a machine of human intelligence should do the same.

Now. All of this induction is something you and everyone already knows. We know that this level of progress increases the inductive probabilities of this speculation playing out. None of us needs to be explained any of this logic as we are all well aware of it.

What's going on is that humans like to speculate on a future that's more convenient for them. Science shows human psychology is more optimistic then realistic. Hence why so many people are in denial.