Other attributes are simplicity, perfection, infinity, immutability, unity, truth, goodness, beauty, omnipresence, intellect and will. The constancy (immutability) of any "physical constant" is thus subject to experimental verification. If the concept is fully applied, value semantics implies immutability of the object. God's immutability defines all God's other attributes&colon; God is immutably wise, merciful, good, and gracious. It is thus closely related to God's "immutability", and is contrasted with his "immanence". Clojure draws considerable influences from Haskell and places a very strong emphasis on immutability. From there, Geisler deduces Simplicity, Necessity, Immutability, Impassibility, Eternity, and Unity. Immutability does not imply that the object as stored in the computer's memory is unwriteable. Infiniteness and immutability in God are mutually supportive and imply each other. These patterns usually symbolize longevity, because of their immutability. His treatise called The Immutability of Things, deals with motion explicitly. This immutability has been guaranteed since Unicode version 2.0 by the Name Stability policy. To simulate immutability in an object, one may define properties as read-only (writable&colon; false). Like full immutability, the use of final variables has great advantages, especially in optimization. The third is immutability (Holtz & Wagner, 2009).