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PROFESSOR: All right.

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So effectively we'll
start off by talking

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about why people think that
time travel is not possible,

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all the supposed
"theoretical" experiments that

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proved that it's not possible.

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And then we'll explore
a little bit more

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into, like, what's the
definition of time travel,

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because we can talk about time
traveling, like we're traveling

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through time right
now, it's just

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at, like, a pace of
one second per second.

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So we can talk
about time dilation

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and explore how we can travel
at periods of maybe seven

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seconds per second.

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And then after that, we
go a little more in-depth

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in a bit more layman terms
of how time dilation works.

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And then we ask, like, so if
we can travel forward in time,

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can we travel backward in time?

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And that brings in
the whole concept

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of, like, how you need
more-- when you increase

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the speed of an object, the
mass of the object increases,

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and then you also
require more energy.

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And when you put in more
energy, you may not necessarily

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increase the speed,
and therefore it's

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still a big question whether
time travel is actually

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really possible.