So saying "Yes, and" bypasses our inner critic. We all have an inner critic that kind of guards what we say, so people don't think that we're obscene or crazy or unoriginal, and science is full of the fear of appearing unoriginal.
Todos tenemos un crítico interno, que cuida lo que decimos, para que no piensen que somos obscenos, locos o poco originales, y la ciencia teme parecer poco original.