Perhaps there is more to it than any unbounded extension in the dimensions of matter, space and/or time – for even the galaxies are not necessarily infinite, let alone the timeless tracts of primordial possibility. And we can also encounter ‘it’ as a diverse property of content and form in number, geometry, language, music, art, literature and thought.
Then perhaps the indeterminable limits of our concepts hold the key to the ‘redefinition’ of infinity as an infinity of differences, which science now posits, in part, with the theory of a multiverse.
Nonetheless, the concept of infinity presents the mind with a paradox, since the definition of infinity, by definition, defies definition.
Mike Laidler