Rich is an audiobook narrator, and he records huge files on his Mac Mini. Should he record to an external hard drive, rather than the internal drive? Leo says that is just silly. The SSD has wear levelling that keeps it in a safe condition and the reliability isn't an issue. They also have error correction built in. So it will be just as fine to record to the internal drive than an external drive. Thunderbolt 3 is also just as fast as the internal drive, so either one will work. And professional grade professional software will ensure no errors happen. He may want to record to two sources for backup purposes.