Because it arrived at the close of a cycle to complete something, not to start it. Ra says it outright: he teaches end knowledge, because that is what Human Design is, not beginning knowledge. He ties it to 1987, the year of his experience and of Supernova 1987A. It also matches his reading of the Plan lock. The key of the Planning era, the 42, is an end gate whose plan is that we reach our maturation and close our cycle, and he calls it the gift of closing something: we are here to get this knowledge and to understand. None of that makes it useless afterwards. His expectation was that after 2027 living your design matters more than studying it, and that the knowledge travels from person to person.
This is not a fact, not medical advice and not a promise of healing. It is part of the cosmology Ra Uru Hu, who founded Human Design, left behind, and nobody knows exactly how it will unfold.
Free, no account and no email. Every answer here was written by hand from what Ra Uru Hu left behind, not generated. Ask your own question at The 2027 Oracle.