naive question about tracebacks

[Andrew Koenig]

>>> def foo():
...     bar() 
... 
>>> def bar():
...     baz()
... 
>>> foo()
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<stdin>", line 2, in foo
  File "<stdin>", line 2, in bar
NameError: global name 'baz' is not defined


If the most recent call is last, why is it called a traceback
instead of a traceforward?

More generally, why is the most recent call last?  Is it because
of the presumption that the earlier calls will scroll off the
top of the screen?