Headaches are one effect that can come from inhalation of isopropyl alcohol. Isopropyl alcohol, or rubbing alcohol, is often used in the home or in medical facilities to treat various conditions or to sterilize instruments and skin. However, if isopropyl alcohol is inhaled there can be serious side effects.
1a) Definition of contradiction: A contradiction exists any time a proposition P is asserted to be true in conjunction with its negation, not-P. 1b) Definition of conjunction: A conjunction is a connective that joins two propositions.
1. the act of going against; opposition; denial. 2. a declaration of the opposite or contrary. 3. a statement that is at variance with itself (often in the phrase a contradiction in terms) 4. conflict or inconsistency, as between events, qualities, etc. 5. a person or thing containing conflicting qualities. 6. (Logic) logic a statement that is false under all circumstances; necessary falsehood.