Sorry, I must have skimmed too quickly and missed that.

Look for an expiration date. Radionucleotide style detectors end up failing with false positives when they reach end of life. You might need to have all the old ones replaced.

The majority of people occupying the same bed will have congruent driver/passenger sides. Distant strangers don’t need to know which side you are referring to. Couples from different regions could adopt the local convention.

The terrible state of online play ruined everything nintendo for me.

Don’t overthink it. Look up faculty and try to find one that teaches introductory courses. Send them an email stating something along the lines that you’re a non student looking to learn a little more than high school introductory terms. Ask if there’s a lecture you could audit or a time like office hours where you could ask questions. A bunch of professors would probably be willing to talk to a flat earther if they were approached on a polite and courteous manner.

If your interest can’t be satisfied with a question session, you could look into whether a local university has an option for non-degree students to enroll in classes. That’s an option that’s frequently not advertised but is pretty common (at least in the US.)

I bet you could find a professor near you that would let you attend office hours and ask whatever questions you have.

Hold an in class quiz with essentially the same problem but with different values. The students that actually worked through the problem should be able to do it again with the changes. Those who didn’t understand and just put down what their peers got will struggle with a quiz. Bonus points if you can restructure the problem in a way to elucidate which specific aspects you think the students were skipping over with help from their peers. Feel free to have specific requirements assigned point values in the problem statement.

Don’t call them into your office and put them on the spot. That will make this adversarial. Your job is to teach them how to solve problems and communicate their methods in a clear fashion. You should reevaluate your problem writing and grading policies if just looking up answers can earn a passing grade. If you give a quiz, be up front with them that you have concerns about some students skipping the work and copying answers. Reiterate that the point of the exam was to make sure they can solve problems, the correct answer is merely a byproduct.

I will add speculation that there is a difference between what your students think you expect from an answer and what your expectations actually are. Mismatches in expectations are immensely frustrating for both parties. So don’t leave your students guessing. Give them specific examples of work of different quality and what aspects earn full points and what things might lead to point deductions. Some of the best professors I had would publish all the prior year exams with their solutions. That gave everyone the opportunity to mimic the workflow and match the level of detail expected. That also elliminates the concern of students finding the answers online or from prior year students for exams as the teacher will have had to avoid reused questions entirely.

It’s definitely not a complete nor perfect solution, but I’ve noticed that a number of accounts disproportionately post very negative news links. I’ve started blocking some of those users. It helps break it up a bit. I’m sure I’m missing some news now, but there’s only so many times I can see posts about the world burning up or genocide before browsing lemmy becomes stressful and nihilistic.

So if I see the same negative news story on multiple communities, I’ll click on the user and if they’re blasting negative stories everywhere I just block them. For example, I just blocked silence7@slrpnk.net, not because of any harassment or anything, it’s just that they almost exclusively post political and climate doomsday stuff.