[srl]

You and I have very different experiences. At the places where I've been a student and worked, it was possible and permitted to enter the vast majority of buildings (I think all academic buildings, but I'm hedging with "vast majority"), during working hours (something like 8am to 6pm), without any identification or permission. Importantly, this always includes libraries.

I know people who, when considering faculty job offers from universities, use "are libraries open to the public" as a proxy for other valuable properties of the university. It seems like a pretty good heuristic to me.

I've been asked for ID exactly once on a university campus---I needed security to let me into my office building in the middle of the night because I'd forgotten my wallet in there, and they needed to record my name for some record. The officer didn't seem interested in _checking_ the ID so much as copying down the name.

[whimsicalism]

I would be surprised if this were true for MIT libraries, it certainly is not for Harvard. Otherwise, many academic buildings were open. But not libraries because tourists would be disruptive.

[thwayunion]

MIT's openness is a huge wedge issue in the Harvard-MIT culture wars. That sounds like stupid elitist junk, but makes since historically. MIT wasn't always... "MIT". Not too long ago, it was just another college. Its open culture combined with proximity to austere academic/government/private institutions is one of the two reasons that it grew to be the behemoth is it now. The literal openness to the public has long been a huge source of "soft power" for MIT.

(The other reason for MIT's rise being WW2 and the military-industrial-academic complex ofc)

Even with this topic set aside, MIT has been turning into just another Harvard, which is a real shame. MIT alum used to be very proud of the fact that any and all were welcome to participate in many aspects of campus life.

[cowsandmilk]

pre-covid, you could go into MIT libraries as a member of the public. This was well known in Cambridge exactly because it was in stark contrast to the policy for Harvard libraries. You also could get on the wifi and access all the journals MIT had electronic access to.

[generationP]

The MIT library is open to anyone who can get into the cluster of buildings that contains it (along with the main building, the infinite corridors, math and CS and many other disciplines). You won't be able to check out books if you aren't from MIT, but you can stroll and read and scan at your pleasure.

Harvard is the odd one out here.

[beowulfey]

Public libraries allow anyone in -- BPL for example. I used to study there all the time, but I didn't think it was that disruptive. This is just one opinion but I actually really like this as a heuristic and will probably use it myself. Libraries should be open to all!

[cli]

Your experience matches mine, except for the libraries. In my experience at 3 private eastern US universities (two ivy leagues and one liberal arts), all libraries required university IDs or a pass to enter beyond the lobby. I do not know what was required for a non-university person to obtain a pass.