4 ms·

I mean, by the same standard I'd guess we also haven't said a large portion of all phrases that have meaning When things get combinatorial I'm not sure percent

• mensetmanusman 5y ago
  That just means it is unlikely we would understand other cultures immediately if we could time travel:) Maybe the difference with materials is that there are almost certainly hidden gems that could improve the lives of humanity, e.g. by helping contain fusion reactors (stars on earth).