In reply to paul_in_cumbria:
Actually, 1980 marked a point at which climbing development plateau'd out. If you think about it historically:
Nylon ropes - 1940's
Rock Shoes (P.A.s) - early 50's
Machine nuts on slings - late 50's
Alloy karabiners, hard steel pegs - early 60's
Alloy nuts on slings, nylon tape slings, technical grades - mid 60's
Climbing walls - mid 60's
Nuts on wire - late 60's
Harnesses, systematic training - early 70's
Belay plates, general use of chalk, harness design frozen at present pattern - mid 70's
Cams - late 70's
Since when it's just been tweaks. Ropes, krabs, nuts, slings, cams - all are lighter and sweeter to use, but they're still ropes, krabs, nuts, slings and cams.
Even the advantages of sticky rubber are overrated in my opinion. I've not noticed any great difference between climbing on the Etive slabs in the 60's and nowadays, a crag which some people thought would no longer be worth visiting when Fire's came out.
Also, the modern indoor scene, through which many people start climbing, has imposed a spurious structure to the activity as an expectation of the need for training as people move from indoor top-roping, to indoor leading, to "moving outdoors" (gulp), with more top-roping, single-pitch to multi-pitch etc. No wonder the average punter is put off progressing.