That doesn't really make sense to me. What does it mean to "know what an apple looks like" without being unable to imagine it? How would that be any different from knowing what a face looks like without being able to imagine it? Do note I said
realistic apple [1], not just a cartoonish drawing, so I don't just mean "a squished circle"...
[1] Example: https://drawpj.com/wp-content/uploads/2018/05/hyperrealistic...