What does it mean that Gluttony is a fake Gate of Truth?


Gluttony is said to be a fake Gate of Truth, as shown by when he swallows Ed
and Ling. They are transported to a place that is full of blood, which seems
to be entirely different from the place where the real Gate of Truth takes
someone. What does him being a fake Gate of Truth mean, as opposed to just
being some sort of transportation device? What is the difference between his
Gate of Truth and the real one?




Gluttony was created for the sole purpose of being a portal of Truth. Father
was attempting to create a way to access the so-called "non-reality" (beyond
the Gate) without paying a toll; essentially, he wanted to entirely bypass
Truth so that he could access [all alchemical knowledge within the
Gate](https://anime.stackexchange.com/q/4938/274).

!["Gluttony is the result of Father's unsuccessful attempt at recreating the
Gate of Truth."](https://i.stack.imgur.com/pNwjA.png)

However, Father is not omnipotent; he was unable to create a portal which was
able to do what he hoped for. Instead, what you see of Gluttony was the
result: A portal, attached to a homunculus, that serves as a gateway to a
different world, one that is neither reality nor non-reality (that is, it is
somewhere between the universe and the realm of Truth).

!["I guess it's safe to call this place the crevice between reality and the
truth."](https://i.stack.imgur.com/640dl.png)

It probably goes without saying at this point that the difference between this
Gate and the real one is that, well, this one is useless. Basically, it's just
[its own dimension](https://anime.stackexchange.com/q/2336/274) that serves as
nothing but a place for Gluttony's consumptions to go. It contains no
alchemical knowledge, no God (which would be in the real Gate), and no way
out.




Gluttony was created for the sole purpose of being a portal of Truth. Father
was attempting to create a way to access the so-called "non-reality" (beyond
the Gate) without paying a toll; essentially, he wanted to entirely bypass
Truth so that he could access [all alchemical knowledge within the
Gate](https://anime.stackexchange.com/q/4938/274).

!["Gluttony is the result of Father's unsuccessful attempt at recreating the
Gate of Truth."](https://i.stack.imgur.com/pNwjA.png)

However, Father is not omnipotent; he was unable to create a portal which was
able to do what he hoped for. Instead, what you see of Gluttony was the
result: A portal, attached to a homunculus, that serves as a gateway to a
different world, one that is neither reality nor non-reality (that is, it is
somewhere between the universe and the realm of Truth).

!["I guess it's safe to call this place the crevice between reality and the
truth."](https://i.stack.imgur.com/640dl.png)

It probably goes without saying at this point that the difference between this
Gate and the real one is that, well, this one is useless. Basically, it's just
[its own dimension](https://anime.stackexchange.com/q/2336/274) that serves as
nothing but a place for Gluttony's consumptions to go. It contains no
alchemical knowledge, no God (which would be in the real Gate), and no way
out.

