David Hume, Causality and the Principle of A Priori Certainty
Hume contends that there is no evidence from experience to support the necessity of one event occurring after another, and that causality cannot be rationally justified. In other words, denying the alleged necessity of causality does not involve contradiction. However, denying a statement is what establishes its necessity if doing so produces a clear contradiction. Denial of the alleged necessity of causality therefore does not amount to a contradiction because there is no contradiction involved. Causation is not a priori if rejecting the necessity of causality does not involve contradiction. Hume’s claims stem from separating two asserts of knowledge as "relations of ideas"—a priori, meaning that they are certain and it is impossible to imagine them to be false. They tell you about the meaning of words and the knowledge of truths and facts. Following on from this, it would be impossible to know if there were craters on the moon without empirical evidence, as it isn't a contradiction to imagine it not having craters.
By challenging two claims, he illustrates how causality and knowledge are related. Every cause has an effect, so if event A causes event B, then event B will always be the outcome of event A in the future. The following claims cannot be supported by our senses or by our intuition. These assertions, according to Hume, are problematic.
A priori / a posteriori and analytic / synthetic
According to Kant, philosophy and mathematics are examples of disciplines that are a priori, meaning that the true propositions they discover can be figured out by reasoning alone rather than depending on scientific experiments or everyday experience.
A proposition is a priori if it can be deduced from first principles. relating to or denoting reasoning or knowledge which proceeds from theoretical deduction rather than from observation or experience.
E.g. A square has four sides.
A proposition is a posteriori if it can be justified only based on experience of its objects.
E.g. "My car is white": we need to have perception or some other means of experience of the car to know whether it is indeed white.
A proposition is analytic if it is true based on the mere interrelations of its concepts, i.e., based on their meaning alone.
E.g., "Bachelors are unmarried"; this is true based on the very meaning of the concept "bachelor," for it means an unmarried man.
A proposition is synthetic if it is made true only by something outside its mere concepts, i.e., by the objects of the concepts.
E.g. "7x4 = 28": this is not true based on terms alone. It is synthetic, not analytic, because it requires references to concepts outside of itself for its truth (i.e., its truth is not self-evidently present in the terms of its expression). 28 doesn't necessarily contain 7x4. This is something we discover and then connect to the concept to form knowledge (synthesis). And it is a priori, not a posteriori, because the truth of the statement precedes any experience that conforms to it; it isn't a contingent truth that may or may not be the case dependent upon experience, but a necessary truth that can be safely said to condition all experience.
Therefore mathematics is an example of a synthetic a priori.
Ehyeh's critique of Hume's induction from phenomenology
I cannot appeal to the outside world or science in this discussion to disprove Hume's problem of induction. Doing so would not solve the premises outlined within the first paragraph which is "that which has a cause can be imagined not to have a cause, therefore is never certain or a priori." An example of this would be the fact that we could imagine a bowling ball going through the pins instead of hitting them. This means it is never certain if one day the bowling ball could go through the pins, as it is never contradictory in imagination ( a priori) as well as the empirical world ( a posteriori).
That means we must move our attention to the mind itself. It's evident cause and effect is not simple a priori, as it appears to be deniable within the material universe. Yet, what I can do is argue its authenticity as a synthetic a priori, not through the material universe but simply through one's own mind. Thoughts within the human mind are contingent upon either two related yet distinct categories of experience:
- An experience of the senses
- An experience of thought/reason
Within both of these cases, both are wholly dependant on the law of cause and effect to occur. How can one even begin to have a new thought if not for some change from the previous thought? This therefore highlights thoughts stemming from something, thoughts stem from sensory feedback, creating a closed systematic loop of cause and effect and change in ones own mind. If we did not have this cause and effect within our own mind, the mind would be stagnant, still. It would become impossible to have thoughts after your first thought, which would entail the undeniable fact that if not for cause and effect, we could not exist.
This therefore highlights that for as long as we live, even if we assume material reality itself doesn't exist, We can be sure the law of cause and effect is real and absolute for as long as we continue to live, simply through our own phenomelogical experience of ourselves.
The necessity of cause and effect for experience
Having demonstrated that cause and effect is necessarily absolute for as long as we live, this then highlights the fact that cause and effect for as long as life exists will never wholly cease. It is a synthetic a priori meaning; it is the first consequence of experience. Just as understanding language is not the condition, but rather the consequence, of hearing it, so too is knowing space not the condition, but rather the consequence, of experiencing it. It would be simply impossible for humans and conscious self-aware life to exist if not for cause and effect, as we would never get beyond our first thought.
Following on from this, if the philosophy of materialism is correct (which it very likely is as it fulfils all its necessary conditions for it to be possible), Then the existence of cause and effect, although cannot be known within all circumstances, necessarily exists as an objective property of existence. As it were, without it, there would be no conservation of energy.
There would be no conservation of momentum. Following on from this, it would appear that both in a solipsist sense and a materialist sense, cause and effect must necessarily exist. If this law were flawed in any part of the universe, it would lead to the complete collapse of the system, as it would fly right in the face of the fact that "energy cannot be created nor destroyed". As I will demonstrate, if this were the case, it would destroy the idea that the universe could begin to exist in the first place! as I will demonstrate.
I would argue being comes before time, not time before being. To exist, time requires space, substance, and being. This also answers the question of why there is something and not nothing. For time to exist, something must first exist for time to act on. Therefore, the primordial substance of the universe must necessarily of always existed. This necessitates the fact that the law of cause and effect (motion) has simply always existed up till now. If it did not exist, then nothing could begin to exist.
Well it is necessary for experience itself or the "perception" of cause and effect happening is necessary for experience and existence itself. This means cause and effect has existed in all parts of the universe at once as cause and effect causes motion itself. Something cannot move without it. Although I'm yet to show something cannot temporarily violate this at any moment and go to its standard state again. There's a few ways I could argue against it though. Its most likely the case that cause and effect must necessarily not be violated, as if something has that opportunity temporarily. There is no reason why it couldn't attain that state permanently (as it violates all laws of thermodynamics). Which would once more, lead to the crashing of the universe. Although right now I'm simply dealing with likelihood's. Nothing a priori. Although I think I've demonstrated its ridiculous and borderline nonsense for the laws to be broken, as long as its not certain I'm yet to prove Hume wrong.
I imagine the answer to this question could lie in mathematics and "nothingness". (mathematics through prediction of the future, and an argument to the impossibility of nothingness to show how silly it is for cause and effect to simply disappear)
The necessity of cause and effect for experience sounds very much like Kantian categories of the mind
Now i just need to create a method through which we can be 100% certain of future events unfolding.
To be honest, Cause and effect doesn't even need to exist for me to still make a strong case against Hume. This debate is a complete wrap in the next round. I'm going to completely scrap my argument from cause and effect. It muddies the waters, the Steelman is coming next round. The argument through synthetic a priori patterns of necessity. From my argument its evident I've made a good argument "cause and effect" has existed up till now and will within my own being till i die, yet I'm still to prove they will remain in the future.
Its been done, potentially. Lets see what CON has to say.
Trying to find a sufficient argument against this philosophy is going to give me PTSD. At least i have 5 days to make some sort of Frankenstein's monster.
Thank you, you too! I highly doubt I will win this debate. After all, it could be said both Kant and Popper failed to truly bring the sledgehammer down on Hume's induction argument. I simply had an interesting philosophical thought in regards to this question and would like to check the veracity of it.
Looking forward to a challenging debate.