My guitar teacher recommend me to write out all the major scales. His intention was that I would see how double sharps appear in the scale. I have written them all and found this:
I wrote them following the cycle of fifths so that the sharps appear consecutively and I have put the enharmonic scales together. Assuming that they are correct, I am surprised that the maximum number of double sharps is five, while that of double flats is only one.
Does this mean, applying Occam's razor, that it is better to use flats in general and especially when there are double accidentals?