Submersible pumps are best installed by the professionals. These items are hardwired and can be quite dangerous so installation of these items are not recommended for the "do it yourselfer".
When something goes wrong, it goes awry.
Something Always Goes Wrong was created in 2001.
Of course someone could install cellular shades themselves. But it is always better to have a trained professional install cellular shades incase something goes wrong.
It depends what goes wrong
If something goes wrong, this might mean that it could produce problems. If a problem comes from something that went wrong, this can be bad news for many people.
They take money just incase something goes wrong, if nothing goes wrong, they keep money. If something goes wrong $$$ > Income, insurance prices go up.
A mutation.
On a Windows machine the system restore process allows a user to return to a previous state on the computer if something goes wrong. This allows you to restore your settings should something go wrong.
they can die if something in the colony goes wrong. :)
you could have an heart atack
It doesn't move, or derails.
Murphy's Law: If something CAN go wrong, it WILL go wrong (and usually at the worst possible time). usually seen WITHOUT the part in parentheses