You're too clever for this forum, Kevin. Or maybe not. I've just had rather a shock. When I had this idea a few years ago it was because Wiki, my source of all non-Mick wisdom, read

In mathematics, the Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the two preceding ones:

1,1,2, 3, 5, 8, 13, 21, 35, 55, 89, 144 ...

Naturally I spotted the flaw and punted it around (everyone got it wrong, nobody was impressed). Imagine my surprise today when returning to the Wiki page I find

In mathematics, the Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the two preceding ones:

1,1,2, 3, 5, 8, 13, 21, 35, 55, 89, 144 ...

Often, especially in modern usage, the sequence is extended by one more initial term:

0,1,1,2, 3, 5, 8, 13, 21, 35, 55, 89, 144 ...

In all conscience I cannot claim the credit.