 Some TTists seek to explain the evident developmental changes in children’s conceptual abilities without the need to posit any radical change to or development of ToM concepts. These TTists propose that children do not change the conceptual components of their ToM. These TTists hold that children operate with one and only one TOM with the same basic concepts throughout their entire lives—from early infancy to adulthood (Baillargeon, Scott, &amp; He 2010; Scott &amp; Baillargeon 2017).