The seventh of the T3 series, the “8 Ages of Man” (formerly 7, but I suspect it became 8 so that the numerical sequence of disks — 4, 6, 8, 12, 20 — made more mathematical sense) refers to Shakespeare’s sixth age from As You Like It, the ‘doddery old fool” age:
The sixth age shifts Into the lean and slipper'd pantaloon, With spectacles on nose, and pouch on side, His youthful hose well sav'd, a world too wide, For his shrunk shank, and his big manly voice, Turning again towards childish treble, pipes And whistles in his sound.
(Image: © Copyright Keith Edkins and licensed for reuse under Creative Commons Attribution-ShareAlike 2.0 License.)
The most obvious part of the image is what looks like a clear reference to the famous “Elderly People” warning sign.
This was introduced in the United Kingdom in 1981 after a children’s competition, and has, in recent more politically correct times, has become quite unpopular. It’s viewed as stigmatizing the elderly with stereotyped attributes, although to be honest it’s not much worse than what Shakespeare managed in his version.
There is what looks to be a hand (sporting a beaded bracelet) pushing or placing the rightmost figure. This hand could conceivably be holding another hand…
The text on the three sides reads as follows:
s r e a c h o u t i e c e c a g e / (flipped horizontally) h t / n a t i o n (flipped vertically)
nations reach out ?
and some kind of cage.
There’s an O₂ in the small triangle at the top right – this is unlikely to be a reference to the Mobile Phone company O₂, so it’s more likely to be the molecule. Disk T3:8/8 had CO₂ in a similar position, so we might be looking at the gases in the atmosphere.