Weakness , phenomenalists can only say that our experiences do have these patterns. But first, it isn’t obvious that we can actually describe that pattern without referring to material objects; and second, if there is no independent cause of this pattern, what reason do we have tothink that future sense-data will follow the same patterns? e.g. ‘Penguins exist at the South Pole’. Finally, the conditionals in which the analysis is given may be falsified by situations that would not falsify the claim referring to the material object, e.g. I won’t experience certain sense data if I suddenly go blind upon entering the room, but the table will still be there.