Formal cause, as logos, incorporates the patterns of side-effects as part of essential nature: tetrads restore poesis and the making process to the study of artefacts.
LSD reveals the whatness of things, their quiddity, their essence. The wateriness of water is suddenly revealed to you, the carpetness of carpets, the woodness of wood, the yellowness of yellow, the fingernailness of fingernails, the allness of all, the nothingness of all, the allness of nothing. For me music gives access to every one of these essences of existence, but at a fraction of the social or financial cost of a drug and without the need to cry 'Wow!' all the time, which is one of LSD's most distressing and least endearing side-effects.