Now how do I determine the original plane is less complex than the 777, Just as we can see how a single cell organism is considered less complex than a chimpanzee.
Lets look at this. Referring to the single cell organism and the chimp, I suspect you are using the metric of the number of cells to determine which is more complex. This is not a bad starting place although you can run into problems fairly quickly using it.
It is less obvious in the life forms than it is in an airplane to me. It is completely obvious how much more complex requirements there are in a 777 than was necessary for the first flight and the plane that successfully provided it.
Again I suspect, but don't know, that you are doing something similar to counting the number of parts involved as your metric.
The thing is that if we are going to discuss something like complexity then we need to know that we are talking about the same thing. This is what operational definitions are for. In this case, if we are using the number of parts then we can both agree that the 777 is more complex than the Wright Bros. plane. Aeronautical engineers might see things a little differently. I don't know if they do but it is certainly possible but I suspect that the first thing they would ask is "What is your meaning of complexity."
Just using the concept of obvious however is not very helpful. To have effective communication, you have to describe why you think it obvious and we are back to operational definitions.
But lets examine some that might not be so obvious. An adult dalmatian and an adult human. Which is more complex and what did you use to decide?
A globular galaxy and a a spiral galaxy, which is more complex and what do you use to determine this.
A human infant and a human adult, which is more complex and how do you determine this. If it is the number of cells then what is the difference in complexity of a short person and tall person?
If complexity is going to be an important part of the discussion on design then we have to know with some degree of accuracy what each of us are talking about so we can be more or less on the same page when it is brought up. Just to say it is obvious only means that it is obvious in your opinion but others might not see it the same way. That is the purpose of definitions. Once we agree on an operational definition then we can go from there with some common understanding.
So to get back to my point, an operational definition of complex is necessary to give a common way of approaching the subject. What do you mean by complex and how do you determine the complexity? That is key.
To claim otherwise seems dismissive and unreasonable.
A bit snarky and I could say that this response is a sign that you have not thought through the issue of complexity very well.
Dizredux