I probably don't need to tell you that there's no such thing as a justified or reasonable cause for starting a war, ever. Watch this video and I think you will know what I mean.
The original photo was taken in 1927 at the Fifth Solvay Conference where the most prominent and outstanding physicists and chemists got together to talk science.
If you are mostly using only one resample image option when resizing images, then you can change the default option to the option you are using the most.
DOF or Depth Of Field is a commonly used technique in photography where you can precisely focus only part of the face or object you are taking shot of. Let's recreate this using Photoshop.