As mentioned above, biolinguistics challenges the idea that the acquisition of language is a result of behavior based learning. This alternative approach the biolinguistics challenges is known as the usage-based (UB) approach. UB supports that idea that knowledge of human language is acquired via exposure and usage. One of the primary issues that is highlighted when arguing against the Usage-Based approach, is that UB fails to address the issue of poverty of stimulus, whereas biolinguistics addresses this by way of the Language Acquisition Device.