In 1886 or 1887, Friedrich Nietzsche wrote that, In his 1922 book "Public Opinion", Walter Lippmann said, "The real environment is altogether too big, too complex, and too fleeting for direct acquaintance" between people and their environment. Each person constructs a pseudo-environment that is a subjective, biased, and necessarily abridged mental image of the world, and to a degree, everyone's pseudo-environment is a fiction. People "live in the same world, but they think and feel in different ones." Lippman's "environment" might be called "reality", and his "pseudo-environment" seems equivalent to what today is called "constructed reality".