 Sarah described that there was these three sessions and you had psychotherapy in between. And so this is really entangled. And MAPS has actually never been really clear what the mechanisms are, what the proposed mechanisms are. Is MDMA supporting psychotherapy? Is psychotherapy supporting MDMA? So you'd need to be able to disentangle this properly in a way. The FDA advisory committee sort of bemoaned that as well and said, you know, it would be nice to have an only MDMA group and an MDMA plus psychotherapy group so we can start disentangling these effects.