The theories connected with the so-called "Neolithic revolution" is one example of a deep study into how, where and why, hunter-gatherer communities formed.

Another theory connects the name with infertile soil.

Finally, any critique of attachment theory needs to consider how the theory has connected with changes in other psychological theories.

An older theory connected it to the Greek verb skyleúo 'to strip a slain enemy'.

Other theories connect it with cosmological events.

One theory for the number of early modern witchcraft trials connects the counter-reformation to witchcraft.

Less likely theories connect the name to the meanings 'next to rough terrain' or 'arc, arch'.

One theory connects dal to Medieval English daly, meaning die.

This theory thus connects Bzou's history as a town of weavers to the origin of its name.

The actual usage of erdstall tunnels is unknown but theories connect it to a rebirth ritual.