[rpdillon]

I can't reply to you anymore, but the study you cited is at least a couple of steps removed from the discussion. First, it's about offloading navigation to a computer, and observing that humans use less of their navigation skills when doing so. This is very far removed from "smartphone use causes mental health problems".

Second, you claim it shows a "provably weaker hippocampus". But the study doesn't show that at all. It shows less activity in the hippocampus, which would be entirely expected, much like if we offloaded translation to a computer, we wouldn't see the same level of activity in the language centers of the brain.

The researchers themselves only conclude this from their study:

> These results help shape models of how hippocampal and prefrontal regions support navigation, planning and future simulation.

That's it.

[lrvick]

The data supports exactly the claim I am making: That indeed, offloading basic tasks we could do for ourselves, like navigation, decision making etc, is robbing our brains of mental exercise that would otherwise make them stronger and less dependent on technology.

[rpdillon]

The study's authors did not even attempt to draw any conclusions about long-term impact on brain health or mental health from their study. You're free to do so, but I don't find it compelling.