A section from the journey

Why It Is So Hard

Other lost scripts were cracked because scholars had help. Egypt's writing fell to the Rosetta Stone, which carried the same words in a language people knew. The Indus script has no such key. No bilingual text has been found, and we are not sure what language hides beneath the signs. Without those two helps, even brilliant work stalls.

We have seen that the messages are short. But there is more to why this script holds out. To feel it clearly, let us look at a lost writing that was won, and see what help the winners had.

Think of the writing of ancient Egypt, the beautiful picture-signs we call hieroglyphs. For hundreds of years no one could read them. Then a single slab of stone was found. On it, the same message was carved three times over, and one of those three was in Greek, a language scholars knew well.

That stone changed everything. With the known Greek beside the unknown signs, patient scholars could match word to word and slowly crack the code. We call it the , and it became the key that opened a whole lost world of writing.

Now here is the trouble. The Indus script has never been given such a stone. No one has found a single inscription that carries the same words in a language we can already read. There is no Rosetta Stone of the Indus. Without one, there is no known beside the unknown, nothing to match against.

And there is a second lock, just as stubborn. Even if we could sound out a sign, we would not know what word we had made, because we do not know what language these people spoke. A sign might stand for a sound, but a sound only becomes a word inside a known tongue. That tongue is hidden from us.

So count the locks on this one door. The messages are too short to show their patterns. There is no second language to give us a key. And we cannot be sure of the tongue beneath the signs. Three locks, and the keys to all three are still lost. That is why a hundred years of effort have not opened it.

This is not a sad ending. It is an honest one. The day a longer text appears, or a bilingual stone, or a firm clue to the language, the work may leap forward. Until then, the right thing is to wait at the threshold, describe what we see, and not pretend the door is open when it is not.

A single stone once unlocked a whole forgotten world. Somewhere, perhaps, an Indus key still lies in the ground, waiting. What does it feel like to leave a question open for a future you will not see, trusting others to carry it on?