In this post, I destroy Kant's a priori knowledge by exposing that Kant was actually describing established beliefs, facts, or general rules that were experienced by other people.
Destroying Kant's a priori is essential in destroying its child ideas called Transcendental Analytic, Transcendental Dialectic, and Transcendental Idealism which are totally abstract and practically useless in the real world, along with Epistemology which is supposed to parse fact from fiction. This then will bring back dialectics and free up philosophy from its current shackles in order to create real, useful ideas that can really solve the growing number of modern problems such as pandemics, terrorism, inequality, global warming, overpopulation, etc.
Like most philosophers, Kant divides all knowledge as experiential as a posteriori, or non-experiential as a priori. However, he makes a very important and subtle, though corrupting addition (in bold below) in that a priori knowledge is those not experienced by onself or himself, but may be experienced by others who are not him.
Is there knowledge and sensory impressions that exist without being experienced? This knowledge is called a priori, This is in contrast to experiential or a posteriori knowledge based on experience.
But a priori is not as yet definite enough. Experiential knowledge might be known a priori, because we do not derive this knowledge immediately from experience, but from a general rule, which, however, we have itself borrowed from experience [OF OTHER PEOPLE].Introduction, Simple Critique of Pure Reason
So Kant's a priori knowledge is really a-posteriori-knowledge-from-others. It would be calling a man who has decided to become a female as a 'woman' just because that's how he wants to be seen. But the word 'woman' does not really match the man's nature and is false or a sophistry.
Fallacies do not support themselves and need to be supported by other fallacies in a chain. Kant supports the a priori fallacy by adding the idea of pure and impure a priori .
A priori knowledge is either pure or impure. Pure a priori knowledge has no empirical element.
This makes something non-empirical as somewhat empirical. Refering to our man-woman example, this is like calling the man as an 'impure woman' instead of calling him as a man.
The problem is that it corrupts the definition of knowledge and facts which are demonstrative and real, by mixing it , like mixed fruit, with opinions and beliefs which may or may not be real.
To solve this non-problem, academics had to create epistemology which is supposed to re-separate fact from opinion. This then adds unnecessary effort when the whole problem could have been avoided by not mixing up fact and opinion in the first place.
The original tool to split fact from opinion is called dialectics and already was doing its job just fine, simply by accepting arguments that can offer proofs. Nowadays, this is seen in peer-reviews. Notice how Kant even tries to destroy the intellectually-democratic tool of dialectics:
Normally, what Kant calls impure a priori knowledge is called a posteriori knowledge from memory.
But this would destroy transendence, so he instead disregards memory and instead places the fact or idea within the metaphysical soul itself. In computer-speak, each soul would be like a laptop that saves everything to a cloud server, as the Transcendental Whatever.
In such a case, the laptop is a ‘thin-client’ and is a mere extension of the cloud server and not an independent computer. Its new data comes a posteriori from its keyboard and mic, while its old data comes a priori from the cloud server itself. Instead of the laptop doing the normal logic and processing of its old data and ideas, it would be done by the Transcendent cloud server and merely fed down to the laptop. The powerful server would then have more resources to do its own kind of Transcendent Analysis and Transcendent Logic that is superior to the logic of the tiny laptop.
But this is what Theology and organized religions do.
Kant is like an overeager software developer that makes and documents a lot of useless schemas and counterintuitive definitions to create his own transcendent virtual universe confined only by his fallacy of time. As such, he has no proposition on multiverses, teleportation, nor time travel.
A person who is sensitive to sophistry can easily see Kant planting blind belief in his reasoning about time and even morals which can be very arbitrary, leading to the categorical imperative:
Kant would support the willpower of a good country invading a bad country to impose its version of goodness, as proven in Groundwork and Perpetual Peace. Together with Nietzsche, it helps explain why Germany kept on invading countries in WWI and WWII under the idea of spreading its goodness, backed by sheer will.
Kant was trying to establish a hyper-immaterialist philosophy in the tradition of non-democratic religions by combining logic and metaphysics.
Enlightenment works, such as the empiricism by David Hume, was all about destroying Church dogma and blind belief, driving dogmatic intellectuals away from it, and so Kant gave them a new philosophical refuge. It's the same nonsense, but in different colors.
What theologians call 'God', Kant calls Pure Reason. In both, God and Pure Reason needs no experiential proof, and there is no room for debate or dialectics. Both Theology and Pure Reason have no practical use since their meat is in the abstract or theoretical dimension only. Both theolgians and epistemologists gain revenue by selling books and a fee from its believers or students as college debt. Theologians were then known as mendicant scholars, just as epistemologists are known as philosophers flipping burgers.
In terms of practicality, Kantianism's main rival, Objectivism, is superior simply because its meat is in the physical dimension as material objectives. It's easy to see objectivist-philosophers being rich economists, bankers, and CEOs. Even Marxist-philosophers or dialectical-materialists are more prominent as national leaders. But who has ever heard of a Kantian president or world leader?
The only bright side with Kantianism is that it is useless in real life and so it does little or no real damage as well. In contrast, Objectivism's successes come with the evils of inequality and financial crises, while Communism comes with war and poverty.
Since Kant's system is useless, then the best solution is to do nothing about it. Do not bother reading it just as you wouldn't bother counting to infinity or how many angels can fit on a pin, all of which have nothing to do with reality and are really of Pure Imagination.
Instead, study things that are actually useful in the real world, like science, math, and dialectics (discussing ideas with others with a specific goal in mind as thesis, iterating with every opinion or failure as antithesis until you get it right as synthesis). These can lead to real innovations and solutions for the many problems that are cropping up.
If a person wants to have the truth or knowledge of the Transendental Ideal, then Eastern Philosophy is the way to go, as it can give a direct a posteriori knowledge of the Ideal through the experience of samadhi, nirvana, or satori and can even do it free of charge (the only catch is that you pay with your ego, which is the most expensive and fundamental part of one's soul, symbolized by taking the red pill in the Matrix). This is infinitely better than giving away real money or getting into debt to enter a philosophy college in exchange for useless knowledge of epistemology.