Neanderthal speech remains a subject of debate in the scholarly community. There is a sizeable body of evidence, however, that suggests Neanderthals were capable of at least some complex speech. The structure of their tongue and larynx, as well as some as their brains, suggest that they had the physical and the neurological capability to speak. And Neanderthals carried a gene known to influence speech in modern humans. Additionally, there is much circumstantial evidence suggesting that they could communicate abstract ideas to each other. Some of their tool-making technology, as well as their hunting techniques and mortuary practices, have been interpreted as evidence of language, because they would have been difficult to execute otherwise.