Are the abilities to use language and solve complex problems sufficient to distinguish between a human mind and an animal or machine mind?

If there were machines which bore a resemblance to our bodies and imitated our actions as closely as possible for all practical purposes, we should still have two very certain means of recognizing that they were not real men. The first is that they could never use words, or put together signs, as we do in order to declare our thoughts to others. For we can certainly conceive of a machine so constructed that it utters words, and even utters words that correspond to bodily actions causing a change in its organs. … But it is not conceivable that such a machine should produce different arrangements of words so as to give an appropriately meaningful answer to whatever is said in its presence, as the dullest of men can do. Secondly, even though some machines might do some things as well as we do them, or perhaps even better, they would inevitably fail in others, which would reveal that they are acting not from understanding, but only from the disposition of their organs. For whereas reason is a universal instrument, which can be used in all kinds of situations, these organs need some particular action; hence it is for all practical purposes impossible for a machine to have enough different organs to make it act in all the contingencies of life in the way in which our reason makes us act.As an essay answer the following prompt:Are Descartes’ tests as certain as he thinks they are? Are the abilities to use language and solve complex problems sufficient to distinguish between a human mind and an animal or machine mind? If these two tests are not sufficient on their own, what additional tests are necessary? Do such tests exist? Support your argument with ample citations and direct quotes from philosophers and other academic sources. If a robot like Bender in Futurama or an android like Data in Star Trek: The Next Generation existed, would their artificial intelligence meet the requirements of a mind?