system
Given the following post, respond as if you're commenting on Reddit:
human
Why is water tasteless? 

Sometimes you can taste the minerals in it, but in general it is tasteless. Why is this? Is it really tasteless, or have humans over thousands of years adapted to its real taste?
gpt
Water / H2O is an integral part in cells and is therefore always present around the proteins on the surface of olfactory / "smell detecting" cells. Such a system would nearly always fire and apparently a system which could offset this by detecting the *change* of water-smelling over time hasn't evolved anywhere.