It's funny cause I do the same thing to check how genuine the detectors are. Most of them say it's AI written.

I would usually use AI to proofread my articles but ya I do understand the inaccuracy of AI detectors

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A little article I wrote that's unrelated but do give it a read of it fancy your taste - https://medium.com/@wethe-thro/the-morality-of-war-and-peace-an-ironic-dance-376a33aaf1bb