How does "would" work in this sentece? Here is an explanation of my English grammar book about the word "rouse".
To rouse somebody is to wake them up, make them interested, make them excited etc.
It is extremely difficult to rouse my father in the mornings. (In an informal style, ...to wake my father up...would be much more natural.
There is a 'would' here. So why does the writer use it rather than "is"?