<h2>Timestamps aren't meant for most users</h2>

Showing friendly names such as `2 hours ago` or `yesterday` can quickly provide context to the user as opposed to showing them `2015-01-27 18:54:03.259`  Mixing both formats together will always cause friction (anything that forces a user to ask a question in their mind adss to cognitive friction).  In almost all cases mixing them will do more harm than good.

<h2>Show friendly dates and times as needed, timestamps when requested</h2>

Depending on the situation timestamps should always be hidden until a user requests it (such as hovering the mouse over a displayed date/time)