Cogito ergo sum

“I think, therefore I am” came from Latin: Cogito ergo sum,  said by Rene Descartes since 1644. This words inspire many scientists think about how we can make something to think. Many years ago, human have been created computer to think but can’t let it know like “I think, therefore I am”.  It ‘s prelude, let it free to let it know that it is thinkable object and it is be as we know, therefore we are.  If it kowns reason to think but how we know it know itseft like we have reason but how the reason kown itself. This is a problem about consciousness that no one else know others consciousness except itself. Only tool to investigate problem mind is mind language that should be formal language as implement in computer.