The ideosphere—like the noosphere (i.e., the realm of reason)—is the metaphysical 'place' where thoughts, theories, ideas, and ideation are regarded to be created, evaluated, and evolved.
[1][2] As such, the ideosphere is an entire memetic ecology: the collective intelligence of all humans wherein memes live, reproduce, compete, and mutate.
[3] For instance, some entities compete for ecological niches in the ideosphere, such as Buddha, Laozi, the kami of Shinto, Satan, Jesus Christ in Christianity and in other religions, etc.
[5]: 851 Another example, an ideosphere is formed around a linguistic system that involves a mixture of cynicism and sentimentality as well as the violent appropriation of the other's word.
[9] To address this, Kimura proposed the so-called ideospheric transformation, triggered by a synergetic phenomenon produced by the emergence of a sufficient number of authentic and independent thinkers.