Text: In statistics, many statistical tests calculate correlations between variables and when two variables are found to be correlated, it is tempting to assume that this shows that one variable causes the other. That ''correlation proves causation,'' is considered a questionable cause logical fallacy when two events occurring together are taken to have established a cause-and-effect relationship. This fallacy is also known as cum hoc ergo propter hoc, Latin for ''with this, therefore because of this,'' and ''false cause.'' A similar fallacy, that an event that followed another was necessarily a consequence of the first event, is the post hoc ergo propter hoc (Latin for ''after this, therefore because of this.'') fallacy.

Question: does a positive correlation indicate a casual link?

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Answer: no

Text: A partially ordered set is a bounded lattice if and only if every finite set of elements (including the empty set) has a join and a meet. For every element x of a poset it is trivially true (it is a vacuous truth) that a : x a (\displaystyle
orall a\in arnothing :x\leq a) and a : a x (\displaystyle
orall a\in arnothing :a\leq x) , and therefore every element of a poset is both an upper bound and a lower bound of the empty set. This implies that the join of an empty set is the least element = 0 (\displaystyle igvee arnothing =0) , and the meet of the empty set is the greatest element = 1 (\displaystyle igwedge arnothing =1) . This is consistent with the associativity and commutativity of meet and join: the join of a union of finite sets is equal to the join of the joins of the sets, and dually, the meet of a union of finite sets is equal to the meet of the meets of the sets, i.e., for finite subsets A and B of a poset L,

Question: does the system of all subsets of a finite set under the operation subset of form a lattice?

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Answer: no

Text: Clobetasol propionate /klobetsl/ is a corticosteroid of the glucocorticoid class used to treat various skin disorders including eczema and psoriasis. It is also highly effective for contact dermatitis caused by exposure to poison ivy/oak. Clobetasol belongs to US Class I (Europe: class IV) of the corticosteroids, making it one of the most potent available. It comes in shampoo, mousse, ointment and emollient cream presentations. It has very high potency and typically should not be used with occlusive dressings, or for extended continuous use (beyond two weeks). It is also used to treat several autoimmune diseases including alopecia areata, lichen sclerosus, and lichen planus.

Question: can you use clobetasol propionate on poison ivy?

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Answer: yes

Text: Carlo Rambaldi, who designed the aliens for Close Encounters of the Third Kind, was hired to design the animatronics of E.T. Rambaldi's own painting Women of Delta led him to give the creature a unique, extendable neck. Its face was inspired by those of Carl Sandburg, Albert Einstein and Ernest Hemingway. Producer Kathleen Kennedy visited the Jules Stein Eye Institute to study real and glass eyes. She hired Institute staffers to create E.T.'s eyes, which she felt were particularly important in engaging the audience. Four heads were created for filming, one as the main animatronic and the others for facial expressions, as well as a costume. Two dwarfs, Tamara De Treaux and Pat Bilon, as well as 12-year-old Matthew DeMeritt, who was born without legs, took turns wearing the costume, depending on what scene was being filmed. DeMeritt actually walked on his hands and played all scenes where he walked awkwardly or fell over. The head was placed above that of the actors, and the actors could see through slits in its chest. Caprice Roth, a professional mime, filled prosthetics to play E.T.'s hands. The puppet was created in three months at the cost of $1.5 million. Spielberg declared it was ''something that only a mother could love''. Mars, Incorporated refused to allow M&M's to be used in the film, believing E.T. would frighten children. After Mars said ''No'', The Hershey Company was asked if Reese's Pieces could be used, and it agreed; this product placement resulted in a large increase in Reese's Pieces sales. Science and technology educator Henry Feinberg created E.T.'s communicator device.

Question: et was played by a kid with no legs?

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Answer:
yes