Growth of Global Connectivity and Information Exchange:
Internet and Digital Infrastructure: The expansion of internet access, data transmission rates, and global communication networks is often cited as a tangible manifestation of the noosphere's growth. Metrics like the number of internet users (over 5.4 billion globally as of 2023, per ITU data), data traffic volume, or the proliferation of social media platforms (e.g., X's user base and post volume) can indicate increased interconnectedness of human thought.
Knowledge Sharing: The growth of open-access scientific publications, collaborative platforms like Wikipedia, or global research networks reflects the noosphere's development. For example, the number of peer-reviewed articles published annually or citations in global databases like Google Scholar can serve as a proxy.