I am aware that in real planes most commands are made through the
conventional flight controls - however there are some operations that
simply *require* a keyboard. Fuel management, for example.

Let's say I want to fly my Baron from Boisie, Idaho to Khartoum. I have
done in-depth calculations, involving complex algorithms and in my
estimation, even if I start with full fuel, I may run out before I get to
Sudan. In this case, without a keyboard to re-establish a given fuel
level, the flight cannot continue. Looking at pictures of real planes, I
do not see any dedicated button on the panel to accomplish this function,
so I can only assume there must be a keyboard input *somewhere* - but
WHERE? I cannot see it anywhere!

Another example - on a short hop from Los Angeles (LAX) to Chicago
(ORD). Obviously fuel is no problem on this short distance, but there is
a long, boring section, after crossing the Rockies at FL370 - the
terrain levels out, and it seems to take forever to get up to the Midwest
plains and make my approach to O'hare. I would like to just skip this
whole section, but once again I find no function in the real plane
allowing me to do this. So there must be a keyboard input . . .

Please be so kind as to enlighten me. In return I will challenge
everything you say and tell you you are simply not smart enough to grasp
my algorithms. . .