1905 to 1909 - Einstein and Lenin take on Mach

How, in their different ways, Einstein and Lenin demolished the intellectual basis of the Austrian philosopher Mach.
Bächtold summarises Mach’s view on atoms as: “Mach’s view on atoms can
be described as consisting of five main ideas: (a) atoms do not exist in themselves, (b)
the notion of atom is only a thought-symbol for a complex of sensations, (c) atomism is
an unfruitful hypothesis, (d) atomism is an artificial hypothesis, and (e) atomism is an
unjustified hypothesis.”
By the mid 20th century the Machist objection to the idea of atoms just seemed absurd
and obscene.
Hiroshima was not destroyed by a ‘complex of sensations’