As a software developer I well know that software and information systems can have bugs. But it still astonishes me when software from big companies that is being used thousands of times each day across the world has egregious errors.

For example, look at this screenshot from the Malaysian Airlines iPhone app, where the top of the screen has a prominent and scary message about there being no e-mail address provided, while the bottom of the screen has a notification that an e-mail has just been sent to the address which is supposedly not available. And yes, an e-mail was received.