The fact that the two types of bitcoin wallets have distinct functions makes it prudent to keep both. (bitcoinafrica.io)
Some games allow the player to perform distinct functions such as repairing an item (Betrayal at Krondor, Ultima Underworld) where as other games only allow for a catchall use / drop / drag function (Fallout). (adventureclassicgaming.com)
Just like the opsins were multiplied and evolved distinct functions in early vertebrate evolution, also the transducins and their target enzyme were duplicated and diverged to separate functions. (scilifelab.se)