Can I.J. Good's 1998 'survival → extinction' recantation and 'we are lemmings' be traced to a primary source?

The question

claim-ij-good-1998-reversed-intelligence-explosion-to-extinction holds that in a 1998 autobiographical statement I.J. Good said the word "survival" in his 1965 opening line should be replaced by "extinction," concluding "we are lemmings." The chain of custody is weak: Wikipedia (Tier 4) relaying an unpublished statement conveyed through Good's assistant, Leslie Pendleton.

Can the 1998 statement — or a reliable reproduction of its exact wording — be located and quoted directly?

Why it matters

This is the capture's headline surprise and inverts the received view of Good as the optimistic father of superintelligence. It carries the capture-level flag [surprising biographical claim; needs primary]. A surprising, view-inverting claim resting on an unpublished, third-hand source is exactly what the sourcing floor says must not advance without primary confirmation. It should stay seedling until then.

What would answer it

• Trace Wikipedia's citation to its stated source (often attributed to Vernor Vinge's or others' relaying of the Pendleton statement, or to the statement's reproduction in a memorial/retrospective).
• Find the exact wording of the 1998 statement, ideally the document itself or a first-hand reproduction, and confirm the survival→extinction edit and the "lemmings" phrasing.
• If no primary reproduction exists, record that the claim cannot be raised above Tier 4 and note the limit on the claim-note.