FREEDOM.... FOR " OIL"

Most living things are not equipped with a shut-off valves. Such as the human body and the like, and if so, as to my knowledge man can mimic the condition. The sea, the earth and the air we breath have no limits. There is no natural shut off valve in their make up.
With that being said, OIL rigs are designed and operated by man.  I was under the impression that any kind of machinery of that nature (Man Made) had to have an On and OFF valve within it's mechanism in order to pass inspection and to  test it. I would think that as each unit was put in place it would not have been set at full throttle or whatever it was going to connected was closed off. Can  they really connect a new pipeline or rig with the Oil gushing out. I would think not, well maybe...
Where is the ON and OFF valves which should be mandatory and created for emergencies such as
this?
Every man made and installed mechanical device we use has to have an On and OFF switch or it is classified unfit for consumer use.

OIL SPILL

The situation with the the Oil Spill is very serious and frightening. Just to think that there are so many other things a parent has to worry about in keeping our children safe, now we are all in danger because of this tragic accident. More jobs lost for the fishing industry, not to mention the health hazards imposed. For those of us watching our diets, sea food was an alternative.
 Another concern is that a guest on the news stated that someone might be able to correct the problem, but the powers to be have not asked them personally. Well, are we talking about egos and who gets into the spotlight or are we concerned about all us that are affected by this mishap? What effect will the oil spill have on all of us a few years from now?
Parents teach their children compassion, caring and to do the right thing in life.
Are we as adults falling short of what we are trying to convey to our children?