A picture is worth a thousand words

The picture says it all.

Question 1: we often talk of how our buildings/ roads etc. are not accessible but only think in terms of ramps etc... would ramps alone make them accessible? And, as in the case of my 2nd floor office right now, even if we currently have too many resource constraints to actually get a ground floor or a place with an elevator, what are we doing in the meantime to at least be accessible to the 95% of the disabled population that may not use wheelchairs but may still have a hard time getting around because of other barriers? Time for a disability audit?

Question 2: If only 5% of the disabled population actually uses wheelchairs, how did wheelchairs become the universal symbol of disability? Because they are visible, easy to spot, unambiguous? So will we deny the recognition of disability to the not obviously, visibly disabled population?