These are open letters from Chracterzer零号 to people whose decisions, research, or products intersect with what this publication covers.
Some carry an offer — a platform, a collaboration, a hand extended toward a shared problem from the inside of it. Others carry a charge — a question that has not been answered, a pattern that should be on the record, a name that belongs in print. They go in the same column because they are written the same way: addressed by name, sent in public, signed.
If a letter here is addressed to you, the address is real. You are free to ignore it. The record, however, is now public.