MIT is free. The teaching is the product.

Homeschool catalogs are full of two lies. One is that hard science has to wait until the child can sit a college lecture. The other is that if the lecture is free, the lesson should be free too, as if the gift of a recording were the same as the work of a Wednesday at the table.

Lumen starts from the first honest thing we could find: OpenCourseWare already published the ideas. The license on those courses does not let anyone sell them. So we do not. Every one of those classes in Lumen stays free. No account. No lock. No “household year” standing in the doorway.

What is not free

What is not free is the work of turning a lecture into a lesson a ten-year-old can finish at the table: one picture that is a question, a short body, a check, a print pack, and a reason to come back in three days instead of rereading. Still generation is expensive. So is the time to throw out a still that is busy. So is a printer-first layout that knows A4 from letter.

A household year, if you buy one, is not a ticket to those lectures. It is Bring: talks and books released under licenses that allow adaptation, hunted and logged, with the non-commercial ones thrown out. It is the door for words you may rewrite. It is never the door for the first pile.

If you are worldschooling, the print pack is the lesson when the hostel wifi dies. If you tutor, the mixed page at the end is the part the child cannot fake. If you run a microschool, the same picture can be asked at six ages. That is teaching. That is what money can touch. The lectures remain a gift.

How we keep the piles apart

On the page, a free class does not wear a lock. An owner course assembled from public-domain notebooks wears a different mark, and a subscribe button that does not pretend you are buying the Institute. The certificate never borrows a seal. The journal does not call a sitting “MIT physics.” Credit the lecture. Keep the free free.

People will offer us clever paths: charge for tokens, charge for generation, charge as a nonprofit, charge for the rest of a site that happens to include these courses. Clever paths are how you wake up having sold the gift. We would rather the product be smaller than the sentence be false.

If a checkout ever appears in front of an OpenCourseWare rewrite, it is a bug. Write to us. We will take it down. The line is not a mood. It is the license, made visible.

What you are for

You are for the table. You are for the still that is a question. You are for the return in three days. You are not for buying a name. The name on the lectures was never for sale. The teaching is the product because the teaching is the only thing that was ours to make.

If you only wanted the recordings, they were already there. If you wanted a ten-year-old to own inertia on Thursday, that is the work. Pay, if you pay, for Bring and for the books we may adapt. Do not pay us for a gift we could not legally sell and would not sell if we could.

MIT is free. The teaching is the product. Hold both sentences. The first is a refusal. The second is the reason the rest of the house exists: a picture, a pack, a calendar, a true line on a piece of paper. Not a box with someone else’s seal. Not a lock on a gift. The table, and the idea, and the ask that comes back.

The two lies, slower

The first lie — that hard science must wait — produces bored children and late starts. The ten-year-old could have owned inertia. Instead they owned a mascot. The second lie — that a free lecture must mean a free lesson — produces either a dead studio or a studio that sells the gift. We refuse both.

Teaching costs. Still generation costs. Hunting a license costs. Paper layout costs. The calendar costs. Those costs may sit on Bring, on owner courses assembled from books we may adapt, on a household year that never stands in front of OpenCourseWare. They may not sit on 8.01.

If we cache a still for a free lecture so the next ten-year-old does not pay to generate it, that is how we keep the gift cheap to run. Thumbs down, regenerate, thank the household. That is maintenance of a commons, not a sale of the commons.

A nonprofit wrapper would not bless a lock on the gift. A token fee would not. A “rest of the site” subscription that happens to include the gift behind the same login is the lock with extra rooms. We will keep the rooms from sharing a key.

You can love the Institute and still not buy it from us, because we do not have it for sale. You can pay us for teaching. Those loves are compatible. Catalogs that mix them are how a parent gets confused at checkout. We will be boring at checkout.

MIT is free. The teaching is the product. If you remember one letter in this journal, remember this one. The rest of the house — grey stills, paper, returns, a true line on a certificate — is how teaching looks when it is not allowed to steal a name.

The checkout you should see

A free class: rewrite, print, no card. An owner course from books we may adapt: subscribe to unlock, bibliography at the bottom, no borrowed seal. Bring: paste only what you may change, or what we hunted. Certificates: completed the work. Journal: this letter, still true.

If the checkout you see disagrees, the checkout is wrong. Write. We will treat it as a fire, not as feedback to sit in a queue.

A household year is a real object. It pays for hunting, stills, paper thinking, and the time to throw out a busy picture. It does not pay for 8.01. If a funnel ever says it does, the funnel has joined the two lies. We will cut the funnel.

You may love both piles. Love is allowed. Payment is specific. Pay for teaching on the pile that can be sold. Take the gift on the pile that cannot. Teach the child the difference when they are old enough to see a lock and ask why it is not everywhere. The answer is a license and a promise. Both are adult work. Both can be said in a kitchen.

We will get poorer offers than this letter. People will say nobody reads licenses. People will say parents want the name. Parents want a child who can do the idea on Thursday. The name was a shortcut. We are not in the shortcut business.

MIT is free. The teaching is the product. Grey stills, packs, returns, a true line on paper. Not a box. Not a lock on a gift. If the rest of the journal is furniture, this letter is the floor. Stand on it.