When I play the piano, touch type or when I pick out a tune on the guitar my hands are slightly raised with the knuckles at the base of my fingers a little higher than the finger knuckles. Watching classic style banjoists their hands are down with the knuckles from the middle of the fingers and the knuckles at the base of their fingers more or less in line - for speed on the strings, so I'm told. I've seen Chris Sands in action, (I'm sure OH can post a picture of him or there may be one on this site) and I've just watched a video of Pat and Eric Stefanelli. The back of their hands are more flat than raised.
When I 'had a go' at the banjo I found it extremely difficult to flatten my hands. I had more trouble with my left hand. Now when I play the piano or touch type I have no trouble keeping my hands on the keys - not so with keeping my fingers on the strings of a banjo. With each change they were flying up in the air wasting valuable time. I don't think I'm cut out to be a banjoist!
Thank you to Jody and Trapdoor2 for your comments. I hope I've explained my problem (OH might even be able to finding a picture of a guitarist's hands for comparison. I'm not up to posting pictures yet.) Now, Trapdoor, please don't resort to pliers - that would require another hand!
Now I'm self-consiously thinking about how my hands look. Am I a guitar-style banjoist or a banjo-style banjoist? Argh!
I cannot look at the music and the banjo at the same time. Glance at one, glance at the other. I'm sure it is similar to the piano...some notes/positions are in the muscle memory and require no "looking" for your fingers to find their way; others require only a quick glance...and even further, some require concentration (and perhaps a pair of pliers).