Woa!, this had heated while I was away!
My opinion about copies is that no matter how many patents to take (and by the way how much you do invest in lawyers) if your idea is good enough you will be copied. This will raise controversy again, buy I do not remember the name of the Italian guy who invented the telephone, but surely everybody remembers Alex Bell.
Here in South America, there is no working patent protection scheme. Yes we have the institutions, and we have a patents office, but in the practice it is even complicated for Microsoft to enforce them.
Reality is that most mechanical designs (profitable mechanical designs?) around here are one of a kind. I think that is partly a cause, and partly an effect of our lack of intellectual protection.
Experience is ok. It tempers you juvenile impetus to reinvent the wheel. However the most representative part of our work is done when we look things <<from out of the frame>> and come with the clever and unseen solution. I don’t know how many of you had contact with Feinman’s Books on Physics, but he changed my perception of the world. But to get this clever solution, you have to have seen enough working (and not working) devices to sort out the impossible solutions that come to your mind.
It is very seldom that we have a really, really, new idea. Most of our ideas are born from things we have seen before, only recombined and applied at a different machine.
The main problem is still to know which is the right solution, being yours, or not. Most times when you include your cost of redesign and its risks (when we don’t understand what we are doing, Murphy is an optimist advisor), things already made are cheaper.
I think that in some level we operate like Tolkien, who said something like this: All the things I have read and my linguistics studies are like the leaves that have fallen in the ground and decompose, is from these humus that my writings are born.
sancat