The skills juniors have at any time are more narrow and more focussed on the tasks that are most simple in the current context; new tools that change things inh

The skills juniors have at any time are more narrow and more focussed on the tasks that are most simple in the current context; new tools that change things inherently are most immediately beneficial to people with broader and deeper skill sets, since they shake up the assumptions on which initial (and thus, junior-level) skill acquisition is based. But skill acquisition patterns change as the context changes, so juniors end up benefitting, too, but the effect is delayed for them.