As she says, that's specifically "grand" unified theories (GUTs). A theory of everything might be imagined as similar to a GUT, in that they should both have al

As she says, that's specifically "grand" unified theories (GUTs). A theory of everything might be imagined as similar to a GUT, in that they should both have all of the same stuff on the blackboard and arranged into roughly the same sorts of equations, but a theory of everything might not be able to express all four forces in terms of just one force. Indeed, what we mean by "force" is two different things entirely: in GR, "force" is the shape of the fabric of space, while in QM, "force" is purses of coins (I don't want to say "packets of data") traveling through that space. I don't quite agree with Wikipedia [0] on this; they say: > Unifying gravity with the electronuclear interaction would provide a theory of everything (TOE) rather than a GUT. GUTs are often seen as an intermediate step towards a TOE. We all have different opinions on this terminology, it seems! [0] https://en.wikipedia.org/wiki/Grand_Unified_Theory https://en.wikipedia.org/wiki/Grand_Unified_Theory