hard evidence;  a hard requirement

put the information under the Advantages heading

It's a Dali-esque frightmare of liquescent forms, a pseudo-organic samplescape congested with scrofulous sound tentacles and slithery slimeshapes.

The railways in Wales are a bizarre hotchpotch of lines which, remarkably, do not even allow for a journey between the lines in the south and those in the north without venturing across the border into England.