title: What is the shortest perceivable application response delay?
body: <p>A delay will always occur between a user action and an application response.</p>
  
  <p>It is well known that the lower the response delay, the greater the feeling of the application responding instantaneously. It is also commonly known that a delay of up to 100ms is generally not perceivable. But what about a delay of 110ms?</p>
  
  <p>What is the shortest application response delay that can be perceived?</p>
  
  <p>I'm interested in any solid evidence, general thoughts and opinions.</p>