I am getting a lot of first commenters who, perhaps used to the rudeness pervasive on some other sites (I bet you know one or two of them), bull their way onto this website and begin by being rude, dominating threads, and evincing other annoying behaviors. So I’ll ask readers—both new and old ones—to have a look at the posting rules (“Da Roolz”) on the left sidebar or here. They’ve been carefully crafted over the years to allow discussion that is civil. Right now I’ll just emphasize just two strictures that seem to be violated more often these days.
1.) Do not insult either the host or another commenter. This website is about discussing ideas, suggesting theories, or even injecting a bit of humor or erudition into a discussion. It is not about expressing rage, anger, or sarcasm towards another commenter. Regardless of the other person’s political or ideological views, if you oppose them, go after the views, not the person. The arbiter of this is, of course, moi.
2.) Do not dominate threads. As rule #9 stipulates:
Try not to dominate threads, particularly in a one-on-one argument. I’ve found that those are rarely informative, and the participants never reach agreement. A good guideline is that if your comments constitute over 10% of the comments on a thread, you’re posting too much.
Given the divisions in the country, and the anger and frustration that many of us carry (including me), you may be tempted to express it on this site. Repress that urge.
Also, if you find a good tweet, email it to me (you can find my email by following the link on the sidebar, “How to send me wildlife photos.” And, by the way, if you have good wildlife photos, of the quality that I try to post every day, send them along.
Thank you,
—Mgmt.
And from Kulka:

There is an interesting typo in item #1. Did you mean to say ” It is now about expression rage, anger…”? Perhaps that should have been ‘not’ instead of ‘now’.
Yes, a reader emailed me and called that to my attention. It did indeed mean “not” and I’ve fixed it, thanks.
OK, but this triangle on the Imaginary plane might need an exception – hypotenuse of length 0 = a + ib…?
🤔😆
No thank you!
Complex plane
Precisely that one – Thank you.
I did refer to an Argand diagram on that post FWIW.
I learn from your thinking and enjoy your prose and I’ve studied your most civilised roolz. Commenting, in my old age, as a lapsing atheist, I like throwing myself against the strength of your gently sustained convictions in the hope of effecting a tiny breach, but am ever reminded of Douglas Adams’ astute guidance on the secret of flying “Hurl yourself at the ground and try to miss.”
Have re-read the Roolz and see that Baby Kukla is now in charge of approving posts. The legacy continues!