This ^ already enough signs that the wicket is starting to vary in bounce a bit and the groundsman has said that it’ll get worse from here. We could have put them in again, they score 350 and we need 135 on a minefield and risk losing a test. Yes, probably they’d only get 200-odd and we’d win by an innings or 9 or 10 wickets but you don’t know.
Secondly – fast bowling is incredibly hard on muscles and joints. All quicks are either recovering from injury, nursing an injury of some sort, or coming up to their next injury. Though we rolled SA for not very many, it still took 70 overs with none to spin, it’s the fourth test with not a lot of rest between and they’re off to SL shortly, and cumulative fatigue is a major factor in injuries. To risk an injury when we don’t need to in order to win the test is pointless.
Sir Alastair was summarising back at Sky in London and was asked the same, and whether he consulted his bowlers much, and he said that most of the time they would never even consider it so asking was pointless. Likewise asking them what to do if they won the toss; Broad notoriously always wants to bat first no matter what. He was angry even when Chef chose to bowl at Trent Bridge in 2015 – you know, when he then took 8-15 and we rolled Australia for 60 in under 20 overs……