Just as the White Knight distinguished between the song, the name of the song,
and what the name of the song was called (Carroll, 1998), we will sometimes
need to be careful to distinguish between a random variable, the value of the
random variable, and the proposition that asserts that the random variable
has a particular value. … I will use the most simple and friendly notation possible, at the risk of upsetting pure-minded readers. For example, if something is ‘true with probability 1’, I will usually simply say that it is ‘true’.
David J.C. MacKay