Haggis Agriculture stated that they were reviewing the ban on beef and lamb products, but that the ban on food containing sheep lung would remain in force. As haggis cannot be exported to the United States, it is instead made there, sometimes by Scottish companies. One such uses what is stated to be the same 150 year-old recipe and ingredients as in Scotland, except that sheep lung is not used, and the casing is always artificial. Haggis Haggis is a savoury pudding containing sheep's pluck (heart, liver, and lungs); minced with onion, oatmeal, suet, spices, and salt, mixed with stock, and
1/3–2/3 conjecture the language of probability theory. One may define a uniform probability distribution on the linear extensions in which each possible linear extension is equally likely to be chosen. The 1/3–2/3 conjecture states that, under this probability distribution, there exists a pair of elements "x" and "y" such that the probability that "x" is earlier than "y" in a random linear extension is between 1/3 and 2/3. The 1/3–2/3 conjecture was formulated by , and later made independently by Michael Fredman and by . It was listed as a featured unsolved problem at the founding of the journal "Order", and remains