““Imagine a time when your mobile phone rang but you didn’t answer it. Why not? Perhaps the phone was buried in a bag, making it difficult to reach. In this case your inability to easily answer the call inhibited the action. Your ability was limited. Maybe you thought the caller was a telemarketer, someone you did not want to speak to. So, your lack of motivation influenced you to ignore the call. Or, maybe the call was important and within arm’s reach, but the ringer on your phone was silenced. Despite having both a strong motivation and easy access to answer the call, it was completely missed because you never heard it ring — in other words, no trigger was present.””