Some attributes imply that the UGen is individual, if it not performing side effects.
Individuality means that two instances of a UGen, even when having the same arguments,
cannot be reduced to one. An example is reading buffers. If two UGens A and B
read from the same buffer, they could still be at different positions within the UGen
graph, with another UGen between them which writes to that buffer; hence they could
in fact see two different signals.
Some attributes imply that the UGen is individual, if it not performing side effects. Individuality means that two instances of a UGen, even when having the same arguments, cannot be reduced to one. An example is reading buffers. If two UGens A and B read from the same buffer, they could still be at different positions within the UGen graph, with another UGen between them which writes to that buffer; hence they could in fact see two different signals.