> A small child has zero degree of caution. As a parent of small children I regularly have to repair electronic devices that have been temporarily broken (e.g.

> A small child has zero degree of caution. As a parent of small children I regularly have to repair electronic devices that have been temporarily broken (e.g. different languages set, screens locked out, tablet storage filled by thousands of burst photos of the floor) and a small but growing collection of electronic devices that have been permanently broken (e.g. antennas pulled off of radios, keys pulled off keyboards, ports yanked out) by this lack of caution. > An older person knows they don't know and worries that ignorance will somehow break the device (permanently or temporarily). This may be rational learned behavior. If they don't have someone on hand to fix issues then with many interfaces it's surprisingly easy to get yourself stuck in a situation where it's not obvious how to get out.