>Jr left his wife and 5 kids for a mockingbird talking head
The mathematician Alexander Grothendeick, withdrew from the world and ceased all contact with former colleagues when he began to believe they were under the influence of unseen forces without being aware of it, and effectively controlled by an unseen enemy.
Not only is Grothendieck the greatest mathematician since Pythagoras, he's correct, that people in specific area of science, of the military and in government were and are being manipulated below the threshold of conscious awareness.
Grothendieck mathematic attention was largely applied to higher dimensional topologies.
In Grothendieck's retrospective Récoltes et Semailles, he identified twelve of his contributions which he believed qualified as "great ideas".
In chronological order, they are:
Topological tensor products and nuclear spaces.
"Continuous" and "discrete" duality (derived categories, "six operations").
Yoga of the Grothendieck–Riemann–Roch theorem (K-theory, relation with intersection theory).*
Schemes.
Topoi.
Étale cohomology and l-adic cohomology.
Motives and the motivic Galois group (Grothendieck ⊗-categories).
Crystals and crystalline cohomology, yoga of "de Rham coefficients", "Hodge coefficients", …
"Topological algebra": ∞-stacks, derivators; cohomological formalism of topoi as inspiration for a new homotopical algebra.
Tame topology.
Yoga of anabelian algebraic geometry, Galois–Teichmüller theory.
"Schematic" or "arithmetic" point of view for regular polyhedra and regular configurations of all kinds.
*Here the term yoga denotes a kind of "meta-theory" that can be used heuristically; Michel Raynaud writes the other terms "Ariadne's thread" and "philosophy" as effective equivalents
On 13 November 2014, aged 86, Grothendieck died in the hospital of Saint-Girons, Ariège
How did Grothendieck's supremely logical and rational mind, see what he saw, or imagined he saw?
Grothendeick was borner in the Weimar Republic, is parents were both anarcho/communist SJ radicals who left him at orphanages or with 'comrades.'
Admiration for his parents dedication to the communist cause turned to shock and disgust when he discovered the infectious and contagious nature of the satanic totalitarian scam and that 'Nazis' and 'Communists' were not opposites, but allies; fingers of the same invisible hand.
AG noticed his friends and colleagues being taken over near the height of the French student/commie insurgency which followed the second world war. That revolution - or satanic psyop - failed, or did it?
https://en.wikipedia.org/wiki/Alexander_Grothendieck#