this person is thinking road bikes which might not have changed much, but mountain bikes have changed a lot 1) suspension forks and full suspension bikes 2) m

this person is thinking road bikes which might not have changed much, but mountain bikes have changed a lot 1) suspension forks and full suspension bikes 2) move from 26" to 29" and 27.5 3) dropper posts 4) major changes in geometry, e.g slack head tube angles from 71/72 now the standard is around 66. Shorter chainstays. 5) fat bikes 6) hydraulic disc brakes 7) tubeless tires that use sealant that automatically seal punctures 8) electronic shifting 9) power meters 10) carbon fiber frames and wheels 11) major changes in axles from skewers to through axles 12) internal changes to hubs to increase points of engagement 13) major changes in handle bar lengths 14) drop in gears from 20+ down to 10/11 with no front shifter 15) adjustable geometry with flip chips 16) e-bikes with pedal assist 17) major changes in suspension design, horst, vpp, dw-link, etc. 18) multiple categories of bikes, downhill, enduro, all mountain, trail, xc, gravel/cyclocross 19) bike parks via ski lifts. I expect there to be bikes that adjust gearing automatically based on a desired power output to allow you to maintain the desired cadence at the desired power.