Cloud-flying requires practice, even if you have every modern instrument, and unless you keep calm and collected you will get into trouble after you have been inside a really thick one for a few minutes. In the very early days of aviation, 1912 to be correct, I emerged from a cloud upside down, much to my discomfort, as I didn't know how to get right way up again. I found out somehow, or I wouldn't be writing this.
