The document discusses the fundamental limitations of the current Internet architecture. It outlines limitations in processing and handling data, storage, transmission, and control. Some key limitations mentioned are the lack of diagnostics and feedback for hosts, real-time processing capabilities, context-aware storage, efficient transmission of content, and flexible adaptive control. The document also discusses cross-area limitations like scaling with flash crowds and heterogeneity in network capacity. It provides high-level and low-level design objectives for a future Internet architecture.