Letter to the Editor: A still unresolved mystery in the interaction between intrinsically disordered proteins: How do they recognize multiple target proteins? A commentary on "No folding upon binding of intrinsically disordered proteins: Still interesting but not unique and novel. by Sigalov, A. B., Biophysics and Physicobiology 17, 156-158 (2020). DOI: 10.2142/biophysico.BSJ-2020025".