© Roger M Tagg 2008, revised January 2010, links fixed December 2010
Welcome to FROLIO – a new attempt to merge philosophy and the "semantic web". This website is continually under construction - please send suggestions for improvements to the author.
The general meaning of this relationship type is that A is fit, for the benefit of role B, for the purpose C. There may or may not be a conscious evaluation; we may not necessarily think about the thing that is useful - we just use it (see Heidegger's concept of “at hand”).
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The icon represents a human recognizing a key as useful - for some purpose, such as opening a locked door.
Something (reading clockwise from the spanner on the left, a tool, an idea, an animal, an arbitrary thing or one or more humans, all in role A) are useful to another thing (mostly from the same classes in role B), for the purpose, goal or procedure represented by role C role. In the case of the substitution sub-category, role X might be significant in specifying the context in which substitution could take place.
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In most of these cases, there is the possibility of a negative relationship (e.g. "is no use for"), and also of a judged or measured value of "how much use is it?".
There is one main sub-category, “Uu”, which covers situations where role A is useful for a certain goal, purpose or activity. In all except the last case a B role is not compulsory, as the A role may well be useful for "anyone" - at least anyone trying to pursue the goal or procedure in role C.
is designed for - the A role has been purposefully designed with the particular C role in mind
is appropriate for - given assumptions on how the C role operates or is performed, the A role is a good choice.
is employed by <role B> for <role C> - the A role is actually being (or has been) employed by B in pursuing the C role.
The next sub-category, “Us”, covers situations where role A is a possible substitute, or alternative in place of role B for the purpose of role C.
The third sub-category, “Uo”, covers situations where the presence or existence of role A is an opportunity for pursuing role B.
The main sub-category, “Uh”, covers situations where role A is a habit for people in role C pursuing role B.
Usefulness
The accelerator pedal is useful for making the car
go faster. John Smith is useful as a change bowler (or substitute player,
pinch hitter etc). The new management team is capable of turning round
the company's fortunes. A lawnmower is designed for cutting grass. A
Phillips screwdriver is appropriate for removing or screwing screws with
cross-shaped grooves. A dark
suit is appropriate for a man to wear at a funeral. The trained dog is
employed by a blind person to help him/her get around.
Substitution
The player on the bench was a substitute for the centre-half (when
pursuing the goal of winning the game when the other guy got injured).
Ink cartridge refills are an alternative to buying expensive replacement
cartridges (for the purpose of
saving money). Zen Buddhism is an alternative to Abrahamic religions
(Judaism, Christianity or Islam) when trying to find a good philosophy
for living.
Opportunity
The current Good Guys discount is an opportunity
for us to buy a new washing machine.
Habituation
Eating a pack of leaf baby spinach once a week is a habit for me for
the purpose of getting a balanced diet. The area round
our waste bins is frequented by a pack of rats for the purpose of
finding scraps of food . The Blue Anchor is frequented by Bob Slicker for the purpose
of a boozy and companionable evening .
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Arrangement |
Classification |
Distinguishing |
Interaction |
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Logic |
Motivation |
Partitioning |
Representation |
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Sensation |
Transformation |
Utility |
Volition |
This version updated on 3rd December 2010
If you have constructive suggestions or comments, please contact the author at rogertag@tpg.com.au .