History of Grok in Timeline

By Popular Timelines Editorial Team · Updated: March 26, 2026

Grok, originating from Robert A. Heinlein's "Stranger in a Strange Land," signifies intuitive understanding and empathy. The Oxford English Dictionary defines it as understanding through intuition, establishing rapport, and empathizing. However, Heinlein's conception involves a deeper, more nuanced understanding, as demonstrated by a human raised on Mars coming to Earth.

1949: Tenn's Griggo influences Heinlein's Grok

In 1949, William Tenn introduced the concept of 'griggo' in his story Venus and the Seven Sexes, which Heinlein later acknowledged as a possible influence on his creation of the word 'grok'.

1961: Grok coined in Stranger in a Strange Land

In 1961, Robert A. Heinlein coined the neologism 'Grok' in his science fiction novel Stranger in a Strange Land. The term has been defined as understanding intuitively or by empathy.

Stranger in a Strange Land

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1961: Grok introduced as a Martian word

In 1961, Robert A. Heinlein introduced 'Grok' in his novel Stranger in a Strange Land as a Martian word with no direct Earthling translation, associated with concepts like water, life, and deep understanding beyond terrestrial culture.

Stranger in a Strange Land

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1984: Grok in computer culture

In 1984, the use of 'grok' became concentrated in computer culture, with an InfoWorld columnist imagining a computer using the term to describe understanding the fundamental nature of hardware over software.

1991: Grok used without explicit definition

In the 1991 uncut edition of Stranger in a Strange Land, David E. Wright Sr. points out that the word grok was used first without any explicit definition and continued to be used without being explicitly defined until page 253.

Stranger in a Strange Land

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1994: Grok in Cyberia

In 1994, the book Cyberia covers the use of the word grok in the Cyberia subculture extensively.

2005: Grok defined in Perl Best Practices

In 2005, the book Perl Best Practices defined 'grok' as profoundly understanding computer code, akin to a processor caching memory for immediate use. It also describes re-grok, the process of reloading intricacies of a code into one's memory.

2008: Critical scrutiny of Grok

In 2008, critic Istvan Csicsery-Ronay Jr. observed that Stranger in a Strange Land's major theme can be seen as an extended definition of the term Grok. The term became part of communities such as computer science.