Who are You?

I saw these lines on the board of a DRDO lab…

Some people see a closed door and turn away.

 

Others see a closed door and try the knob. 

If it doesn't open... they turn away.

 

Still others see a closed door and try the knob.

 If it doesn't open, they try to find a key.

 If the key doesn't fit... they turn away.

A rare few see a closed door and try the knob.  

If it doesn't open, they find a key.

If the key doesn't fit... they make one.  We are the key makers.