It's not hard to see how this would happen at a music conference. A conferee may go home with one idea on improving congregational hymn singing that takes such hold in her home church that it changes that community's singing culture forever! A singer in her children's choir grows up to become a church music director and teaches the same method in his churches for years.
A vocalist might hear something about vocation that changes the way he sees his singing completely. Instead of pure art or entertainment, it becomes true worship that draws others in to a closer relationship with God.
You can see where I'm going with this. We are all students and we are all teachers. We all have the potential to be life altering butterflies.
Maybe someday I'll write about how this could have an adverse effect, but for now, I'm excited about what I will learn in the next few days that will change the way I think and work. No matter what your profession is, take time to be a student and a teacher.