In reply to yh001:
1950 - "Let's admit, that climbing on Stanage/the Cromlech is redundant in alpine climbing"
1972 - "Let's admit, that freeclimbing is redundant in aid climbing"
1980 - "Let's admit, that single-pitch climbing is redundant in climbing"
1984 - "Let's admit, that bolted climbing is redundant in trad climbing"
1985 - "Let's admit, that slate is worthless crap"
1988 - "Let's admit, that bouldering is redundant in climbing"
1991 - "Let's admit, that indoor climbing is redundant in outdoor climbing"
1992 - "Let's admit, that campussing is redundant in trad climbing"
1996 - "Let's admit, that outdoor bouldering is redundant in climbing"
2003 - "Let's admit, that deep water soloing is redundant in climbing"
2016 - "Let's admit, that speed climbing is redundant in climbing" (Shani/me)
2017 - "Let's admit, that indoor move is redundant in outdoor climbing" (you!)
I figure we are like ants; edge-feeders. We explore the limits of our environment like an ant on a leaf. As such, every sport will diversify and specialise as it matures. Reinvention is constant. Let's embrace it.
EDIT: All dates are approximate!
Post edited at 14:14