This was the case after the 1st Edition of the CPR was published.
In the 2nd Edition, Kant added a large section i.e. Refutation of Idealism to absolve his TI from solipsism.
Here from AI [wR]:
AI wrote: Kant's Refutation Against Idealism and Solipsism
Kant's Refutation Against Idealism is a key component of his response to the charge of solipsism.
Solipsism, the philosophical position that only one's own mind and experiences exist, is a potential consequence of idealism, the view that reality is mentally constructed.
Kant's Argument
Kant argues against idealism by asserting the transcendental reality of objects. This means that while our perception of objects is subjective, the objects themselves exist independently of our perception. He supports this claim by pointing out that our experience is structured by a priori categories of understanding, such as causality and substance. These categories, which are innate to our minds, allow us to distinguish between our subjective perceptions and the objective world.
Key points of Kant's argument:
• Transcendental idealism: Our experience is subjective, but the objects of experience are real.
• A priori categories: Innate mental structures allow us to distinguish between subjective perception and objective reality.
• Refutation of idealism: The objective world exists independently of our perception.
Addressing Solipsism
By establishing the objective reality of objects, Kant directly addresses the solipsistic concern that only the mind exists. His argument suggests that while our experience is subjective, the objects of experience are real and independent of our minds. This counters the solipsistic claim that the external world is merely a mental construct.
Additional points to consider:
• Inter-subjectivity: Kant emphasizes the shared nature of our experiences. We can communicate and agree on the existence of objects, suggesting a common reality beyond individual minds.
• Practical reason: Kant's moral philosophy posits that we have duties to others, which implies the existence of other minds. This practical perspective strengthens his argument against solipsism.
In conclusion, Kant's Refutation Against Idealism effectively addresses the charge of solipsism by establishing the objective reality of objects and emphasizing the shared nature of our experiences.
His argument provides a philosophical framework for understanding the relationship between our subjective minds and the external world.