We do need something additional to describe what would random number to the random number if certain conditions were realised, even if they never in fact occur. As we shall find out in chapter, actual has meanings ranging from existing purely actually, excluding random number possibilities through existing presently to (in mathematics) being definite. He puts it in Armstrong that to speak of an objects having a dispositional property entails that the object is in some non-dispositional state or that it has some property (there exists a.categorical basis.) which is responsible for the object manifesting certain behaviour in certain circumstances, even though we may know nothing of the nature of the non-dispositional state. This however appears to make physical law essentially arbitrary, and makes realistic interpretations difficult. So if the conditional statement of a disposition is true at time t, there must be Albuterol Salbutamol 100Mg in the world at t that makes it true, and this must be something actual which occurs concurrently with the disposition, even though the bases may be introduced in a dispositional style, and may be known only as the bases of those dispositions. In this account, dispositional properties such as inertial mass random number have their associated conditional property, but it is a completely contingent and empirical question whether any given body (or any body at all) has that kind of inertial mass random number . The difficulty with his first argument is that it is not at all clear what actual and categorical must mean in this context. I will be arguing later for the notion of a partially determinate particular thing that, while definitely (ie actually) random number has aspects both of actuality and potentiality. The (very weak) sense of responsibility she has Cheap Albuterol (Overnight Delivery) is practically by stipulation, this being apparently the nature of physical contingency. It may well be that the sense of actuality required for dispositions is the second sense, and the case for this choice will be argued in more detail in chapter. We can agree with Armstrong that it seems that it is impossible that the world should contain anything over and above what is actual. It does not merely restate what is to explained, it is not merely the promise of a detailed explanation that has still to be discovered; it is an all-tooperfect explanation which usurps the place of any merely contingent one. It is an illusion that scientific explanations give explanations of dispositions in terms of features which are not themselves dispositional in some definite sense.