For those saying Sam "isn't ready".
As a batsman he clearly has a long way to go, but that isn't why he has been picked.
As a bowler he has over 100 first division first class wickets and isn't 20 yet. At headingly he can do a job.
When Anderson played he hadn't bowled as many overs as Sam has. Sam has more control than Anderson had at the same age.
Clearly if Stokes can't play then Buttler moves to 6 and Woakes plays, but Sam could do a job batting at 9 after Bess and offers variation.
Also having him see first hand how Anderson and Broad prepare will be great.
Finally having Sam bowling in the nets to the England batsman over the next few days won't do them any harm either.
This negatively around the selection of Sam is ridiculous.