

It depends on whether your adversary is motivated and equipped, your resources, and what visibility you would like to permit.
Let’s suppose you have a poorly equipped adversary, a couple thousand to spend, and you want it to be invisible.
When a door is bashed, the wooden jamb breaks at the lock. So you could go bash resistant device, I believe there are inserts that make bashing significantly harder. Or you can go with a steel door and steel jamb.
For windows, a sheet of polycarbonate glued to the outside should make them resistant to rocks and small arms fire. You should be able to break the glass and kick out the polycarbonate in the event of a house fire.
Check your slider door that it can’t be levereged upward and removed while shut.












I think you are right, and I find the thought of raising someone with the intent to keep them ignorant is gross.
As a teacher, one could not bring up the subject, but one could encourage critical thinking.
If I had the opportunity, but with these constraints I would say:
“How do you know they are bad (or X opinion)? The Church thought Galileio was wrong about the sun being in the center of the solar system, and scientists thout Harlen Bretz’s theory about the Missoula floods sounded too biblical. Anyone can be wrong; so it is important to gather information and decide for yourself.”
And yes, I believe a child would understand the point, even if they don’t get the references.