Except you do have context. If you know that in a particular driving condition you get 2 mi/kWh and you have 25% SoC and approx 125 kWh usable in the pack, then you have ~62 mi of range remaining. Now, if like me you live around mountains, I know that coming back to Denver from say Georgetown it's almost entirely downhill. So instead of 2 mi/kWh, I might get 4-6 mi/kWh and can adjust my expectations. Tesla's navigation software already takes into account elevation change / terrain, but my understanding is that Rivian does not, so the displayed miles of range will not account for that. A Better Route Planner also accounts for terrain, so if you planned a route that way you could get a better idea of what your real-world range expectation should be. Another case for me is that driving home from work is almost entirely uphill, so my MINI's range estimate the next morning is quite a bit short of my real range because it's estimating range based on my last drive cycle's efficiency, which will be a lot lower due to going all uphill. Make more sense? It's one of those where if you don't push the limits you probably will never care and probably won't be doing much of the mental math until you live with an EV for awhile. I'm on my second short-range EV, so I'll always playing with numbers if I think it might be close.I can see % being an exact number, but it doesn't mean much without context, so that's what gets me confused. 25% going up Mt. Hood is much different then 25% going down.