Fig. 4From: Inventive processes in nature: from information origin in chemical evolution to technological exhaustionEvolution of communication capacity with time showing the best reported capacity including reports from scientific publications (green, purple), capacities switched within the core network from commercially available products (red) and data rates offered to residential customers in at least one country (blue). Symbols indicate use of free-space (crosses) or fibre (solid symbols) based optical systems or electronic systems (open symbols). Purple symbols represent spatial multiplexing. Reprinted from (Ellis et al. 2016) under the Creative Commons licenseBack to article page