DaisyWorld was invented by James Lovelock and Andrew Watson, to explain how the Gaia Hypothesis did not require a sentient Earth, but only feedback loops. Life itself could maintain the planet fit for life – within limits.
Daisies reflect or absorb incoming solar luminosity, via
their 'albedo'. Barren ground also has an albedo. For some range of luminosity,
the black and white daisies can maintain the world temperature within their living range.