Martin Lambie-Nairn's launch ident for Channel 4 in 1982 was among the first broadcast identities to use computer animation as its primary formal method. The concept is structural: a set of geometric blocks, each distinct, converge from separate trajectories to form the channel's logo. The motion enacts the channel's founding philosophy — a patchwork of independent voices assembling into a single platform.
What makes it historically instructive is the discipline of the iteration. Each ident in the series uses the same underlying logic — blocks converging — but varies the trajectory, timing and entry point. The identity system generates variety from a single rule, which is the foundational principle of good motion identity design. The ident remained in use for fourteen years.