# Gpuccio: Functional Information Methodology

**URL:** <https://discourse.peacefulscience.org/t/gpuccio-functional-information-methodology/7549>\
**Category:** Conversation\
**Tags:** Science, Design\
**Created:** [August 25, 2019, 1:33am UTC](https://discourse.peacefulscience.org/t/gpuccio-functional-information-methodology/7549 "2019-08-25T01:33:24Z")\
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**Author:** ![glipsnort](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.peacefulscience.org/glipsnort/32/1541_2.png) [@glipsnort](https://discourse.peacefulscience.org/u/glipsnort)\
**Post date:** [August 26, 2019, 7:26pm UTC](https://discourse.peacefulscience.org/t/gpuccio-functional-information-methodology/7549/69 "2019-08-26T19:26:02Z")

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> [@](#):
>
> c) **Specification.** Given a well defined set of objects (the search space), we call “specification”, in relation to that set, any explicit objective rule that can divide the set in two non overlapping subsets: the “specified” subset (target space) and the “non specified” subset. IOWs, **a specification is any well defined rule which generates a binary partition in a well defined set of objects**.
> 
> d) **Functional Specification.** It is a special form of specification (in the sense defined above), where the rule that specifies is of the following type: “The specified subset in this well defined set of objects includes all the objects in the set which can implement the following, well defined function…”

Since we’re dealing with BLAST searches here, I’m assuming that the search space is all possible sequences in a genome of the same size. (I’ve been assuming we’re using nucleotide sequence, but the argument is the same if instead we use amino acid sequence for proteins.)

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