a /\¬a = 0
Last week, my father and I got into a discussion over the subjectivity of my blog. He argued that I should be less subjective, and I argued that since this is a blog consists of my opinions (as most blogs are unless stated otherwise), I needn't necessarily be confined to pure objectivity.
In an effort to come up with a post that we can both agree is objective, I've provided this Boolean statement which states that "a" and its negation "not a" cannot be true. In more practical terms, think of a light. A light can not be on and not on at the same time.