Hey, I'm having trouble understanding why sometimes on a sheet of music there are two 'm''s in a row or two i's (notation telling me which fingers to use) And there doesn't seem to be any reasoning behind it. I was under the impressions that I should always be alternating but in the book I'm using "Christopher Parkening method" he seems to stray away from that often.
Also, sometimes in the sheet music, it starts with m finger, and sometimes i.

Part of me just wants to forget all of that and just play the music, but then I also feel that on fast runs having an efficient fingering method would be a huge benefit.

any help would be appreciated.