In recent decades historical comparative researchers have debated the proper role of general theory.

The levels are discontinuous, as defined in the properties above, but researchers have debated as to just how discrete the levels actually are.

For two years researchers debated whether to compare new therapies to the full AZT regimen or to no treatment at all.

As such, researchers have long debated the conditions under which sympatry truly applies, especially with respect to parasitism.

The nonfamilial cases are not thought to be linked to BRCA mutations, though researchers have debated about whether some of them might be.

Pharming researchers debate among themselves which animals are the best hosts for various drugs.

In a similar sense, researchers and historians continually debate the use of sunstone in Viking navigation.

While researchers may debate details of how the mechanism of evolution plays out, there is no credible scientific challenge to the underlying theory.

However, many researchers have debated the results of the above studies.

While many researchers have debated how the US became embroiled in the revolution, it is less often elaborated on its motivations for doing so, beyond the political ones.