.exists(false)

This is not a complete statement and therefore does not have a clear meaning in the context of programming or computer science.

However, if we assume that this statement is part of a code snippet written in a programming language, it might be referring to a method or function call that takes a Boolean argument to indicate whether a particular object or variable exists. The value "false" passed as an argument would indicate that the object or variable does not exist.

For example, in JavaScript, the "Array.includes()" method can be used to check if an array contains a certain value. The method takes an argument that specifies the value to search for, and returns true or false depending on whether the value is found in the array. So, "myArray.includes(false)" would return true if the value "false" exists in the array "myArray", and false otherwise.