Seminar XXIV Final Sessions 1 - Lacan in Ireland

see it here, namely, something that one usually flattens out, but from what iscalled a tetrahedron.A tetrahedron is drawn like that. Thanks to that, there are 1, 2, 3, 4, 5, 6 edges(arêtes). I should say that the prejudices that I had – because it is a matter ofnothing less – pushed me to operate with the four faces, and not with the sixedges, and with the four faces it is quite difficult, it is impossible to make a plait.There must be six edges there to make a correct plaiting and I would like to seethese balls carrying the outline of the schema, coming back [balls thrown into theaudience]. The fact is that you will note there that the plaiting, not six-fold buttwelve-fold, is altogether fundamental. I mean that, what happens is that onecannot bring into play this knotting of tetrahedrons without starting, since thereare only three tetrahedrons, without starting from the plait. It was a fact that wasunveiled to me rather late, and which you will see here provided I pass you theseballs which, I repeat, I would like to see coming back, because I have not, far fromit, fully elucidated them,. I am going therefore, as I usually do, to throw them toyou so that you can examine them.I would like all four of them to be sent back. In effect, they are not similar. Thereare four of them, and there is a reason for that. It is a reason that I still have notmastered. It is preferable, even though of course that would take too much time,it would be preferable, that these balls should be compared one to the other, forthey are effectively different. I would like that, from this threefold plait which isbasic in the operation of these tetrahedric Borromean knots to which, I repeat, Iapplied myself without really completely managing them, I would like you to drawa conclusion. The fact is that, even for the tetrahedrons in question, one51