I have a feeling it doesn't - either. Defense R&D capabilities (at least on the public stuff) seems to have hit a wall back in the Clinton years.
Oh it does. I knew someone who drove one.
Rather, the things that make a good fighter are more complex now.
As MSgt Mac said, if you learned about Energy Maneuverability from Boyd, you are about 40 years behind the learning curve.
Imagine if you tried to field a WWI army in time for WWII. That is only 20 years difference, and the pace of technology and military change is faster now. Imagine trying to get massive stocks of artillery ammunition forward while your lines were being cut by fighter bombers, your factories were flattened by WWII bombers, and your attacking spearheads were rolled over by medium tanks with half tracks.
Got to keep up with the times, or admit ignorance and go home.