centred

Just found out today after how many decades of living and speaking english that the past tense of the verb 'to center' is 'centred'... SEN-TREAD. The matrix is officially broken. We have no idea what we're doing, and there is no central authority or governing body of absolute truth in this funhouse we've hastily dubbed reality, and this, this right here is the evidence. We're just moving e's around willy nilly. What the hell is going on here?