The blind man in Mark who saw "men like trees walking" knew what trees were despite being blind — blind people have extensive non-visual knowledge

Mark 8:24 — the partially healed man says "I see men, but they look like trees, walking." The question: how did he know what trees looked like if he was born blind? Answer: blind people acquire extensive knowledge through touch and description. He knew trees were tall — even without sight he could conceptualize their form. His comparison was natural: he saw large upright objects moving and associated them with what he knew trees to be.