Abstract
In this paper, I shall consider a number of different ways in which philosophers in recent years have attempted to offer conceptions of natural law which in various respects suggest that the grip of law on reality might be less tight than has been traditionally supposed. One such loosening is represented by the suggestion that many laws might be best thought of as probabilistic rather than deterministic. A second kind of loosening has been the admission that certain laws relevant to human behaviour might hold only ceteris paribus. Yet a third is the suggestion that all laws - including even fundamental physical ones – might hold only ceteris paribus (Cartwright, The dappled world, Cambridge University Press, Cambridge, 1999). How, though, are these different suggestions related to one another? Which kinds of loosening might entail which other kinds? And which, if any, might be most promising as regards making room in the universe for free will? In this paper I shall try to suggest that the first and second strategies are far less useful than the third in making the kind of space which would be required to subserve the reality of free will; and that a fourth kind of loosening – compatible with but not entailing any of these other kinds – from laws as world-dictators to laws as world-constrainers might yet be more useful than any of the other three in this respect.
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Notes
- 1.
For another prominent example of the same sort of claim, this time from a quantum physicist, see Hossenfelder (2019).
- 2.
If indeed Newtonian science is deterministic. For a contrary view, see Earman (1986).
- 3.
It may be important to say here, though, that I shall not here defend the libertarian line of thought in general – rather, for the purposes of the paper, I shall take it for granted. My aim here is to differentiate between some alternative ways of understanding what the falsity of universal determinism might consist in and adjudicate between them.
- 4.
This is by far the most popular way of formulating universal determinism, and so I adopt it here, in deference to the literature, although I have argued elsewhere that this is not in fact the best way to formulate the thesis of determinism since it is damagingly neutral about the question whether there is any such thing as natural necessity (Steward, 2021). This may be the place also to note that for the purposes of this paper, I shall be assuming what some have called a ‘governing’ conception of laws of nature (see Beebee, 2000), since I am in agreement with many compatibilists that on a non-governing conception, there is no evident problem about free will at all. It is only if one assumes that the laws are such as to govern that there is any problem about the compatibility of free will with determinism (though see Huttemann, this volume, for an argument that the Humean faces different problems – an assessment with which I concur).
- 5.
I do not intend to question, for the purposes of this paper, the widespread assumption that there is such a fundamental level, nor that the task of formulating its laws falls to physics.
- 6.
- 7.
Cf Nancy Cartwright “For all we know, most of what occurs in nature occurs by hap, subject to no law at all” (1999: 1).
- 8.
Recall that we are assuming, for present purposes, a governing conception of laws of nature (see note 4 above). The issue might admittedly present somewhat differently given a Lewisian ‘best system’ account, but as mentioned above, I believe libertarians have in any case nothing to fear from ‘best system’ laws.
- 9.
- 10.
- 11.
Kenny speaks mainly of determinism at the ‘physiological’ level as being the potential threat to free will – but presumably, he would think that the same was true of determinism at (for example) the chemical or physical levels.
- 12.
According to new dispositionalists, an agent has the ability to φ if and only if they have a disposition to φ when they are trying (or are otherwise properly motivated) to φ (I borrow this characterisation from Vetter and Jaster (2017)). New dispositionalist positions are presented by Smith (1997); Vihvelin (2004); and Fara (2005).
- 13.
So-called ‘source incompatibilists’ stress that there is a necessary condition additional to the standard ‘alternate possibilities’ condition on acting freely – which specifies that we must be the origin or source of our free actions and decisions. According to source incompatibilists, we cannot meet this necessary condition in the way required, if universal determinism is true, since according to determinism, every condition of the world (except, presumably, the first) can be traced to a prior one. See for example Kane (1996, 1999, 2008, 2011) and Pereboom (2001, 2005, 2014).
- 14.
See (Steward) 2012.
- 15.
A nomological machine is “a fixed (enough) arrangement of components, or factors, with stable (enough) capacities that in the right sort of stable (enough) environment will, with repeated operation, give rise to the kind of regular behaviour that we represent in our scientific laws” (Cartwright, 1999: 50).
- 16.
If necessary for the purposes of according with the wanted ‘empiricist’ conception of properties that are ‘OK’ we can treat ‘force’ here as pertaining to a phenomenologically available property, such as e.g., felt pressure, impact, effort, motion, or whatever, rather than the abstract concept of Newtonian physics.
- 17.
Anscombe was also mindful of the importance of this point – see the final sentence of her (1971) “The most neglected of the key topics in this subject are: interference and prevention” (147).
- 18.
Bertrand Russell makes something rather like this point: “In order to be sure of the expected effect, we must know that there is nothing in the environment to interfere with it. But this means that the suppose cause is not, by itself, adequate to insure (sic) the effect. And as soon as we include the environment, the probability of repetition is diminished, until at last, when the whole environment is included, the probability of repetition becomes almost nil” (1912: 179–80).
- 19.
One might also raise the question, of course, as does De Hahn (this volume), whether there are any such fundamental laws of physics at all. But if there are not, then the arguments of those who suppose that the reign of such laws is incompatible with free will will not even get off the ground.
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Steward, H. (2022). Laws Loosened. In: Austin, C.J., Marmodoro, A., Roselli, A. (eds) Powers, Time and Free Will. Synthese Library, vol 451. Springer, Cham. https://doi.org/10.1007/978-3-030-92486-7_9
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