Being able to write on them is about as useful as a white board, but I think being able to project video in a classroom is extremely useful. Also, the switch to lessons being mostly PowerPoint style presentations is great compared to just a lecture with a chalkboard. I grew up having them in classrooms since third grade, and it’s honestly hard to imagine a class that isn’t structured around them.

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Home Assistant is open source and self-hosted and doesn’t require internet to operate. The z-wave devices connect directly to the device running Home Assistant. If you want Home Assistant to be private it absolutely can be.

I mainly block accounts that seem like they have an agenda. Usually new accounts they post a lot about one very controversial topic. Likewise, I block accounts that are concern trolling or arguing in bad faith. There are so many bots and bad faith actors on the internet I feel like you should be blocking them because they don’t deserve our attention.

I just use Brave on iOS. It works fine for YouTube.