🚀 go-pugleaf

What the tracks do at Harvard have nothing to do with Porter.  The
tunnels are side-by-side between the two stations so the decision
to raise/lower one side was based on considerations local to the
individual station.

Now what *I* don't understand is why that sharp turn kludge was created
at Harvard when the line was extended.  This causes all trains to run at
dead slow for several minutes chewing up a lot of time,  not to mention
that awful squealing of the wheels.   I realize the old part of the line
is very shallow in Cambridge (cut-and-cover vs a tunnel) and a straighter
extension would have gone through the basement of the Coop, but they
sure tunneled deep later on - couldn't they have started the deep part
earlier?