Why is the Indus script still not understood?

In one line

The rule

A script can be read only if we know its language, have enough examples, and can compare it with something we already understand.

Let's understand it simply

Imagine you find a diary with strange symbols. You don't know the language. There are no pictures or clues. You only have a few pages. How will you read it? This is the problem with the Indus script.

The Indus script is a set of symbols used by people of the Indus Valley Civilization (about 4,000 years ago). We find these symbols on seals, pottery, and tablets. But we have not found a 'Rosetta Stone' (a key that shows the same text in a known language and the unknown script). So, we cannot match the symbols to sounds or words.

How it works

1. To read a script, we need to know the language it writes.
2. We need many long texts to spot patterns and rules.
3. If we have a bilingual text (same message in two scripts), we can compare and decode.
4. With the Indus script, all texts are very short (most are 3–5 signs long).
5. No one knows what language the Indus people spoke.
6. No bilingual text has been found, so we cannot compare.

The story behind it

The Indus script was first noticed by archaeologists in the 1870s, but major discoveries happened in the 1920s at Harappa and Mohenjo-daro. Many tried to read it, including Indian and foreign scholars. Some thought it was related to Dravidian languages (like Tamil), others to Sanskrit, or even Sumerian. But no one could prove their ideas.

One famous story: In 1875, Alexander Cunningham published the first Indus seal. Since then, hundreds of researchers have tried to crack the code, but the script remains a mystery.

Where you see it in real life

• Seals found at Harappa and Mohenjo-daro → Each has 5–6 symbols → These are the Indus script.
• Pottery and tools → Some have short inscriptions → Again, the same unknown script.
• Museums in India (like National Museum, Delhi) → You can see real Indus seals.
• School textbooks → Pictures of seals with animal figures and script.
• News reports → Whenever a new Indus site is found, the script is mentioned.
• TV documentaries → Show archaeologists trying to decode the script.

Why it matters

• The script could tell us about the Indus people's language, religion, and daily life.
• Deciphering it might connect Indian history to other ancient civilizations.
• It is a big mystery in world archaeology, showing the limits of what we know.
• Many exams (like UPSC, CBSE) ask about the Indus script and its mysteries.

Common mistakes

• Thinking the script is just pictures (it is a real script, not just art).
• Believing it is already decoded (it is not; all claims are unproven).
• Mixing up the Indus script with Brahmi or Devanagari (those are much later scripts).
• Assuming the script is the same as the language (script is how you write, language is what you speak).

Remember it

No Rosetta Stone, no long texts, and no known language — that's why the Indus script is still a mystery.