>>12143490There is almost nothing more concrete than limits. The fact that you cannot see them does not mean that they are not tangible. They are tangible as hell, and they have many real-world consequences, especially in engineering applications like dynamical systems, and they are the basis of infinitesimal calculus. While your feelings may be understandable to some degree, you are almost certainly not an autist, but a retard. Limits are very elementary concepts and they are not abstract nor arbitrary. How can a limit be arbitrary? It's not like some sperg woke up one day and decided that a limit exists or not for a given function. Limits can be proved formally. There is no way one can understand derivatives and integrals without embracing the concept of limit. This means you do not understand shit beyond high school mathurbation algebra. Go hide and improve before posting again.