Signs are icons, indices (also called "semes"), or symbols (sometimes called "tokens"), accordingly as they derive their significance from resemblance to their objects, a real relation (for example, of causation) with their objects, or are connected only by convention to their objects, respectively.
III; Roese and Olson 1995. ) Such issues may bear on other philosophical work that makes appeal to counterfactual reasoning, for example, theories of causation, counterfactual conditionals and modality.
Thus, the difference observed is actually an example of a correlation rather than an instance of causation.
This is an example of downward causation.
This is an example of upward causation, in which properties of the lower level components affect the behavior of the higher level.
Consider for example, the sense of causation which governs the practical sciences of nature, such as medicine and engineering.
There was a tendency in some to overstep the limitations of these designs, which cannot for example produce evidence of causation to identify risk factors.
It is also a book in which he practises what he preaches in relation to certain chosen areas, including, for example, the topics of causation and explanation, experience, meaning, and freedom.
Consider someone who believes that there is such a person as God, all right, because the existence of God helps with several metaphysical problems (for example, the nature of causation, the nature of propositions, properties and sets, and the nature of proper function in creatures that are not human artifacts).
There may also be room for physicalists to query whether the above examples of "downwards" causation are really cases of physical effects without physical causes.
So, according to this view, neither incoming, contracting electromagnetic waves nor the decrease of entropy would count as examples of backward causation as long as such processes involve ordinary types of matter, i.e., matter that possesses positive mass and/or energy pointing, in relation to our normal time sense, towards the future.
