There's another nuance to black swan events, though. I don't recall whether this was from BS or Antifragile, but the maximum expected magnitude of an event such

There's another nuance to black swan events, though. I don't recall whether this was from BS or Antifragile, but the maximum expected magnitude of an event such as a bubble pop would generally be considered to be the previous max. If the next event were 1.5x-10x larger, it would still be a black swan and could overwhelm the reasonable preparations that were made in anticipation of a repeat.