There’s a difference between being deaf or blind and being a stutterer, Adam. The first two have that disability all the time. Stutterers (or at least 99% of them) can speak fluently in some situations (when alone, when singing…). This is a big difference, isn’t it? So why does this happen. Because when we’re under pressure, fear stuttering, so we plan our words, and when we do that, we also plan our stutters. I’m sure you don’t do that when you’re singing or when you’re speaking to yourself, alone, am I right? All the people who I’ve coached so far have agreed with me on this.