As a side note (not to you particularly--I see this a lot), you can't delete a comment once a reply is made in order to preserve context to the replies. This is probably for people like me, who come after the replies are written.

With this in mind, why side-step the inability to delete your comment by just replacing it with something else? It's technically allowed, but isn't that against the spirit of the original rule?

The comment was losing points and thus obviously incorrect. I'm not going to let it sit around and burn internet points!

You have thousands of points so who cares, and disrupting the conversation is only going to get more downvotes. How about editing in a retraction, without deleting?

I'm curious at to when that example would ever be suitable; memory sizes should be grouped in 3s as well.

The only one I can think of is phone numbers, e.g. Australia is a 4-3-3 grouping for mobiles. But a space has been the standard delimiter there anyway.

Dashes were "the standard delimiter" for a long time for Australian phone numbers. 451-4153 was my phone number growing up (and yeah, I'm showing my age with a seven digit phone number... A friend of mine was on 99-0066 up until the early or mid '90...)

Interesting. As a contra data point, I grew up in Sydney with 86 2050 as our landline (as if there were any other types of line! :) and I never saw hyphens used within phone numbers. I worked for Telstra during most of the 1990's, and didn't see it in use there either. Might be a regional thing? I note that our North American cousins enjoy splattering hyphens through their phone numbers. I like the space approach.

Fair enough. I grew up overseas, so my local knowledge only kicks in in '99.