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An anthropic explanation for evident smallness of the value of the darkenergy implies the existence of a time-dependent component of the scalar field,serving, together with a negative-valued cosmological constant, as one of twocomponents to the overall density of the dark energy. The observers (i.e. us)might then only evolve in those regions of the universe where the sum of thosetwo components (a positive and a negative ones) is sufficiently close to zero.However, according to Vilenkin and Garriga, the scalar field component has toslowly but surely diminish in time. In about a trillion years this process willput a cap to the now-observable accelerated expansion of the universe, leadingto a subsequent phase of impending collapse. However, the vanishing scalarfield might also produce some rather unexpected singularities for a finitenon-zero scale factor. We analyse this possibility on a particular example ofSudden Future Singularities (SFS) and come to a startling conclusion: the timerequired for SFS to arise must be "comparable" to the lifetime of observableuniverse.

What can the anthropic principle tell us about the future of the dark energy universe?