Update README.md

README.md

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 How did life began? This is one of the biggest unanswered question of science, but is very hard to reproduce and verify.
 On the other hand, in computer science, [Von Neumann universal constructor](https://en.wikipedia.org/wiki/Von_Neumann_universal_constructor),
 as a self-replicating construction, is not very complex, comparing thier biological counterpart.
-This lead us to we investigate the idea of ideal gas of programs.
+This lead us to investigate the idea of ideal gas of programs.
 
 Thousands of programs flying inside a box; when they collide, a new program is generated. By a computer science perspective,
 we use gas dynamics and generation rules to replace Chaitin's random sample in AIT; by a biology perspective, we replace