These rare terms may denote critical events, but they are often missed by extant TE systems.
Synthetic biology might allow us to investigate experimentally the evolutionary paths not taken by extant organisms.
The evolutionary steps from egg laying to placental development are demonstrated by extant species.
These models operate concurrently on a connected landscape, parameterized by extant spatial databases, and expert opinion.
Existing or obvious approaches to first-order conditional logics are inadequate; in particular, various representational issues in default reasoning are not addressed by extant approaches.
There need be no debate about what to do in the face of that kind of speech because it is already being done by extant laws.
We next sought more direct evidence for a role of the hippocampus in coordinating EC reinstatement, as proposed by extant models of hippocampus-mediated pattern completion in cortical target sites12,13.
Spices were more expensive than meat, and fresh meat was available, as suggested by extant records of municipal ordinances prohibiting butchers from throwing unwanted animal parts and blood in the streets.
If we start by studying the behavior of simple nested modals, we can naturally build a theory that explains the interaction of epistemic modals and indicative conditionals, together with other distinctive data not sufficiently appreciated by extant theories.
University research centers are an important subject for policy analysis insofar that they have become the predominant policy response to scientific and technical demands that have not been met by extant institutions, including academic departments, private firms, and government laboratories.
Although it is impossible to know for certain how many Devonian taxa made terrestrial forays, the diversity of locomotory behaviours exhibited by extant, morphologically diverse semi-aquatic fishes1 suggests there was a potential for Devonian fish to produce enigmatic sub-aerial traces.
