[Izzy Dunne]

They conclude that most are not worth wasting money on.

I suppose that means that a few ARE worth wasting money on.

[Orangedog]

Here is a quote that I was able to document at one time, but lost track of where I was able to find it. I think it speaks volumes about not giving up on something:

"The secrets of powered flight will most likely not be discovered within our lifetime."

Orville Write - Two years before the first powered flight at Kittyhawk.