1 min readMar 9, 2019
Dear Luis,
Synesthesia is consistent and involuntary over time. It can be learned, but Mr. Perlman’s is genetic. Thank you.
Written by Maureen Seaberg
Coauthor of Struck by Genius (HMH) and Fearfully and Wonderfully Made: The Astonishing New Science of the Senses (St. Martin's Press).