Jose wrote:
Sorry for the stupid question, but how on earth is this possible? Can't
you tell if you're upside down or not? Or is it like being deep
underwater?

If you're in cloud, you can't see out. When flying, you can generate g
forces (by turning, banking, climbing, etc) which can fool you into
thinking that "down" is in any direction. So, it's quite easy to not
know where up and down are. I suppose it's like being deep underwater,
but for different reasons.

This is one of the first things one must learn in instrument flying -
trust the instruments over your inner ear.

...and it's what I always thought was the actual purpose of the minimal
instrument flying taught in the PP curriculum, that is, you can't do it
without reference to the instruments. Second lesson is, that in
anything but momentary, smooth IMC, you can't do it without more training.

They are less likely to be
lying to you.

:-)