Ctrl C + Ctrl V and we have a flanker? Or more ridiculously, a J-10? OK, and you call me naive. You must think that all the countries in this world can copy flankers and fulcrums, but China is the only one who is unscrupulous enough to do it. Road blocks to making the Tejas? Don't even mention that! How about road blocks to making the J-20? Why would you assume that there are more roadblocks to the Tejas than the J-10 or J-20? Yes, China cannot criticize American technology. I believe that is true and I have never done that. You are ridiculous! Perform an experiment without changing variables for 1000 times? How would any Chinese systems work if we did that? Why do you say these things? I don't know how to respond because they are so wrong and so ridiculous. I can only tell you that that is not true; we change the variable each time until it works and then we repeat it 3 times to confirm. Has ANYONE succeeded in designing ANYTHING by doing what you just said? How would you argue against me if I said 1+1=11? Your comment is literally that stupid.