To clarify further - again. 61.8% is not a fib number, it is a fib ratio.
0,1,1,2,3,5,8 are fib numbers
And disagree that 50% is a not fib ratio, for anyone who uses 23.6%, 38.2%, 78.6%, 261.8%, 423.6% and a few others. They are all derived (including 50%) by dividing, multiplying or...