The Commens Dictionary

Quote from ‘Telepathy’

On the whole […] the percipuum is not an absolute event. There is no span of present time so short as not to contain something remembered, that is, taken as a reasonable conjecture, not without containing something expected for the confirmation which we are waiting. The peculiar element of the present, that it confronts us with ideas which it forces upon us without reason, is something which accumulates in wholes of time and dissipates the more minutely the course of time is scrutinized.

There is no percipuum so absolute as not to be subject to possible error.

The percipuum is a recognition of the character of what is past, the percept which we think we remember. The interpretation is forced upon us; but no reason for it can be given.