Mark IV wrote:

Er... well, have you researched the B2 spirit
in detail ever? Or the X47B? Do you know what
the designers at Boeing are leaning towards
these days?

What is your point?

Flying wings are intrinsically unstable and are only flyable with computer
control no matter how much you babble about leading edges.

Both of those airplanes are high specialized as to purpose and immensely
expensive.

Ok, here's another tip about future flight
besides electric:

Within 20 years ALL AIRPLANES will be some
derivative of the "blended body" or "lifting body"
or "flying wing". All of them. They're way more
efficient. The days of the flying tube are soon
coming to an end, except for historical novelty flights.

Nonsense.

Efficiency is but one criteria for an airplane and may matter a lot to
airliners but not so much for anything else.

Cost is also a criteria for many airplanes and an airplane that has to
have a computer control to fly at all is not cheap.

Other conciderations beyond efficiency; low speed characteristics,
short field characteristics, high speed characteristics, stability.

Yeah, there will likely be variations on the blended body concept for
airliners and aircraft that haul freight, and maybe another flying wing,
but not likely.

Note that neither the F-22 or F-35 are flying wings and are not that
much different in form than the F-102 designed in 1950.