Moving visuals on this page — measured at 0.26% brightness change per frame and zero flashes per second; your reduce motion setting stops them. What moves, and how it was measured
Mathematical plates that draw themselves — prime counts, orbits and lattices rendered live rather than shipped as pictures. It runs continuously while
on screen, and it pauses on its own whenever it scrolls out of view.
We measured it rather than guessing: the largest frame-to-frame change in
average brightness is 0.26%, and it produces
zero flashes per second against the threshold of three set by
WCAG 2.3.1.
That is well under the limit, and it is not a promise about any individual: if
moving images are a problem for you, you should not have to assess ours.
Everything animated on this site honours your system’s
reduce motion setting — turn it on in your operating
system or browser and these pages stop moving, with nothing else lost. All the
mathematics is in the text and the still figures.
Room · 3 exhibits
Curiosities
Finished work that answers to no single discipline. Every museum has this room, and most of them call it something apologetic. These are results that are real and finished and simply do not belong to one subject — a solved game is not philosophy because it raises a question, and not number theory because it counts things. They are here because they are worth looking at, not because they were left over.
We set no cookies of our own beyond what the site needs to work, and we run no advertising and no cross-site tracking. Our network provider measures page performance at the edge without cookies and without anything we can tie to a person; we get aggregate numbers, never a visitor. It also runs bot protection there, which is a security control and stays.
Cookies & local storage — the exact list, not a summary
Nothing here is hidden behind a settings toggle that doesn't actually do anything: if it's not in this table, we don't set it.
Name
Type
Set by
Purpose
Duration
ksec_theme
localStorage
This site
Remembers your light/dark mode choice
Until you clear it
ksec_cookie_ack_v1
localStorage
This site
Remembers you've seen this notice
Until you clear it
ksec_cookie_choice
localStorage
This site
Remembers whether you accepted or rejected, so we do not ask again
Until you clear it
ksec_build_notice_v1
localStorage
This site
Remembers that you collapsed the build notice in the corner
Until you clear it
ksec_notice_rev_v1
localStorage
This site
The site revision you last loaded, so a page left open across a deploy can tell you it is stale
Until you clear it
ksec_catalog_seen
localStorage
This site
How many entries the shared catalogue had the last time you looked at it, so the nav can tell you when it has grown and stay quiet when it has not. One number. It says nothing about you — only about how much of a public list you have already seen
Until you clear it
ksec_findings_seen
localStorage
This site
The measurements of Life objects this browser has already sent to the shared catalogue, so it does not send the same one twice. A short list of numbers such as p6:d0-0:n14 — period, displacement, population. It describes what the background drew, not you, and it never leaves your browser: what goes to the catalogue is the pattern itself, and the server measures it there
Until you clear it
ksec_notebook
localStorage
This site
The mascot’s research notebook on /mascot: the claims it tested in this browser, the seed, and the verdict, at most 40 entries. Never sent anywhere.
Until you clear it (there is a button on the page)
ksec_last_visit
localStorage
This site
When you were last here, so the mascot can tell you the site was rebuilt while you were away — and stay quiet when it was not. A timestamp, nothing else, and it never leaves your browser
Until you clear it
ksec_tool_uses_…
localStorage
This site
A per-tool daily-use counter for the free tools, one key per tool (a fair-use nudge, not an enforced limit, never sent anywhere) — set only if you actually use one of those tools
Resets daily; until you clear it
__cf_bm and similar
HTTP cookie
Cloudflare, Inc. (our security & CDN provider)
Distinguishes legitimate traffic from automated abuse — the same security gate described in Methodology
Session, typically under 30 minutes
That's the whole list. We don't set analytics, advertising, or tracking cookies of any kind — Accept and Reject in the banner currently do the same thing on this site specifically because there's no non-essential cookie for Reject to actually disable. That's not us dodging the question: under PECR/LSSI-CE, strictly necessary cookies (all we set) are exempt from consent entirely. We show both buttons anyway, and record which one you pressed, because that's the clearer and more honest thing to do even where it isn't strictly required. Full legal detail in Privacy & Cookie Policy.