Email

There is no contact form on this site, because a form would mean collecting and storing what you typed and this site is built not to do that. Email reaches the same place a form would.

Corrections

If a probability here looks wrong, that is the most useful thing you can write about. Please include the page address and the specific number you think is incorrect, along with what you make it instead. Every figure on the site is enumerated rather than sampled, so a genuine disagreement usually means either a bug worth fixing or an interesting subtlety worth writing up.

Requests

If there is a notation you keep having to work out by hand and there is no page for it here, say which one and roughly how you use it. Adding a distribution page is a small change and the ones people ask for are usually the ones worth having.

Everything else

See the about page for how the site works and the privacy page for what is and is not collected. The short version of the latter is that the roller runs entirely in your browser and this site asks you for nothing.