"It was like to be in a constant state of jet-lag and tiredness. I don't feel like I am forcing my brain to think. Had the attention span of a gold fish and could barely have a coherent conversation."
After reading this as an Air Traffic Controller in this country, (and I want to say this without any sarcasm) It finally makes sense the utter garbage (please don't take offence, since that's what it often is) we get from the cockpits over the radio.
It probably is just that, that you are running on fumes. Not funny at all, and for a second, I felt sympathy. (ok that was sarcasm)
I will from this moment, try to consider this next time I roll my eyes over a read back that didn't even remotely resemble what I gave as a clearance.
Fly safe guys and gals. This post makes sense.