What one hopes is that they might have clerks who can help them with these things. In general the Supreme Court justices themselves are not people I would choose to look to for gurus on technology.
Since justices do rely on clerks, it's not clear to me that an accomplished anything other than a judge could not be brought up to speed on the law.
It is a shame that the justices seem to avoid each other and do not appear to work in a team. Imagine a team of justices that could rely on one being an MD, one being a civil engineer, one being an entrepreneur that could lead/organize tutorial sessions for the others.
Many of the current justices don't even have courtroom experience.
But in terms of overseeing the law, are you saying non-lawyers should be ineligible to run for Congress?
Those clerks would be easy prey for lobbyists. "Here is a small gift, make sure to interpret this patent for Sotomayor using this kind of language and not that kind."