Too old to learn?

I will start this month with a quote by C.S. Lewis :
"You are never too old to set another goal, or to dream a new dream."
We have all heard the phrase "you can't teach an old dog new tricks", but is it true? I don't think so! My old girl is nearly 14 years old now and regularly picks up new habits (not always good ones!), from watching the two younger dogs training.
Now I am in the "old girl" category myself these days, and observing the shows I attend, we are at least 50% of the field, if not the majority. We are up against tough opposition from youngsters who started as children, are far more agile, can think quicker, and probably have faster dogs too.
So what's in agility for us oldies? Looking around me there are plenty of people  who get round in their own time and are obviously delighted with themselves and their dog. They don't expect to win maybe, but are delighted because they had a good run.
Don't get me wrong, I like to win as well as the next man, but these days I find it harder to remember courses, or else I concentrate so hard on one difficult bit that I make a complete pig's ear of the rest! Or else I'm concentrating so hard on where I am going , that I forget to tell my poor dog where she is going!
​ I think I will set myself the goal this weekend of remembering the whole course for a change! I am told it helps to write a crib sheet, so if you see a mad woman talking to herself and scribbling in a book this weekend , it's me!! If I manage a clear round anywhere then that's icing on the cake. Oh, and a startline wait would be champagne!
I am definitely not too old to dream!