Marcus Trescothick is under no illusions about the job he has inherited from injured England captain Michael Vaughan as he prepares to lead his country at short notice in the first Test against Pakistan in Multan.
The Somerset batsman can at least draw on a happy experience, having captained England to victory in his sole previous match in charge against New Zealand at Lord's the last time Vaughan was absent because of his troublesome right knee.
The same injury has done for Vaughan again, England finally accepting that he will not be fit to take his place on Saturday when the threematch series begins.
Trescothick was well aware from the moment Vaughan crumpled in a heap with the sudden injury and had to retire hurt against Pakistan on Monday that, as unofficial vice-captain, he was in the frame to take over.
But it took three days for England to confirm Vaughan's absence and Trescothick as his replacement.
On hearing of his elevation, Trescothick pronounced himself ready for the tough challenge ahead. But having seen the toll the captaincy often takes on Vaughan, he was more equivocal about his ambition to do the job on a permanent basis should England ever decide to offer it to him.
Trescothick is just 14 months Vaughan's junior and does not anticipate the position coming up for him at the right stage of his Test career.
" Being very close to Michael, I've seen the things it does to you. I'm not getting any younger; I'm 29, nearly 30 and I don't see it coming up in the next year or two years," reasoned Trescothick, who nonetheless described the opportunity to captain his country again as a "great honour".
"By then, taking over at 32 I don't think would probably be the right decision. I've seen him go through tough times, and that's probably put me off a little bit.
"I take him to the ground every day, and he says things to me. I just sit there listening, trying to help him through certain situations - whether he's not felt in great nick for a couple of days.
"It's a 24-hour-a-day job. Even when he's back home I know he spends a lot of time on the phone.
"There are a lot of other problems outside when the games are on that you have to deal with. Whoever takes over, it is a tough job to do."
Trescothick is candid enough to describe the temporary loss of Vaughan's astute leadership as a "big blow" to England, as the Ashes heroes bid to add success on the sub-Continent to last summer's victory over Australia.
"After what we have just done - winning the Ashes - you have to think his captaincy was probably a major part of it," said Trescothick.
"The plans we put into place were a big reason behind our success. It was like an extra player almost, with the things he was devising.
"It is quite a big blow. He has been tipped as the world's best captain - he is definitely up there in the top two or three.
"I am his right-hand man, and we have fed off each other. Now it is up to me to try to get the right things happening at the right times on the pitch."
The support of Vaughan - staying on tour, for the time being at least, as England assess his chances of recovering sufficiently - and coach Duncan Fletcher will be much valued by Trescothick who is happy, though, to take responsibility himself for his decisions.
"I'll talk to Duncan and Michael for advice, but I'll do it as I see fit.
"A big part of our success is down to the opening partnership, getting off to good starts and getting rid of the new ball before the middle order come in," he said.
"That was something that was talked about. I've seen Michael drop down from opening to No 3 or four because of the pressures of captaincy.
"I know what the pressures are, and it is up to me to deal with it."