"What man can stand,the bile so vile ? "

    A memorably assonant line from a poem by a Royal Navy petty officer of WW2 period,and whose name I cannot recall, I admit with shame. The advice about keeping one"s horizon in view is pretty sound, in my experience.Also, I read a story once ,about a Lancaster bomber on a flight down the west coast of Africa . Towards dawn, the pilot, who had diligently kept the horizon in view for some time,was distracted by something which caused him to look back inside the aircraft.He was immediately stricken with violent vomiting & a complete loss of balance,similar to Meunieres Disease.The flight engineer had to take over & fly the rest of the mission ! ( Engineers in Lancasters were trained as pilots, as the Lancaster was a "One seat " aircraft, with no co-pilot as such ---risky,one would have thought !!! )