[RadiationRomeo]

The best conspiracy story I can come up with is:

Pilot: Manchurian candidate.

He suddenly was speaking in Russian, a language he didn’t know. He was ordered to crash the plane.

So we have top Polish officials dieing in the same woods where the Russians killed 20K officers 70 years ago.

[Canedawg]

The pilot being in on it has crossed my mind, too.

[Riodacat]

It had to be a very clever and evil plot to convince the top leadership and intellectual elite to all get on an aging Ruskie airplane.
Now, how would the evil Ruskies have done that?
My guess is that they must have been hypnotized en masse 'casue no one in their right minds would have risked decapitating the cream of the country.
So, either one of the most clever and evil plots OR total stupidity on the part of whichever Polish official(s) had responsibility for planning and approving this abortion.
Even if you lean towards a Ruskie plot, you still have to answer the question as to why any sane Polish offial would allow the cream of the Polish elite onto one aging Ruskie plane.
So regardless, Polish stupidity played a major role in this fiasco..