The young autistic boy had full focus on his hands as he concatenated the Duplo legos.
Sorry, not an answer.
In *ix" (Linux, Unix, Solaris etc.) There is a command, "cat"
It is short for concatenate.
I could explain, but it's late here and I am tired.
If the concatenation of the forces acting on a mass is not equal to zero, the mass will undergo acceleration.
What a concatenate! I was just about suggesting you a great source for simplifying your life! Check out the UKessays.com.