The post discusses the relevance and necessity of writing new introductory calculus textbooks, particularly those published under the CLP (Collaborative Learning Project) initiative, which aims to make learning resources more accessible. Comments indicate a long-standing view that the core concepts of calculus have remained stable over time, raising questions about the need for continual publication of new materials. However, there's an implicit support for providing free and accessible educational resources, which could cater to diverse learning styles and increase general understanding of calculus among students.