England in India: Joe Root says his staff could be "silly" to not study from defeat
Joe Root (left) has lost his last three friendlies as England captain
Captain Joe Root says England would be "stupid" not to learn from their 3-1 defeat in India's Test series.
England's batsmen fidgeted when they faced India's weirdos but won't have their next test in Asia until late 2022.
"The boys have to accept what happened, understand it, and be realistic," said Root.
"We would be stupid to get off this trip and say it was India, it was extreme conditions, it is impossible to beat. That is the wrong attitude.
"The most important thing is to know that there are things we can get better at. Yes, they have world-class weirdos, but we can be better."
England won 2-0 in Sri Lanka before beating India in the series' first Test. It was one of only two defeats the hosts have suffered in 38 games at home since 2013.
England's performances have since declined, however, culminating in a final batting breakdown on the third afternoon of the fourth Test in Ahmedabad.
It took England 160 to beat India again and found themselves 10-2, 20-3 and 30-4 before knocking out for 135.
With Axar Patel and Ravichandran Ashwin taking five wickets each, England lost all ten wickets to spin for the third time in the series.
"It was disappointing," said Root. "It was a frustrating way to get there. India showed us how to hit on that wicket."
England have rested over the winter and switched players to improve their physical and mental wellbeing.
Roots team will play a total of 16 or 17 Tests in the calendar year, while Eoin Morgan's White Ball team will battle it out to win the T20 World Championship in October.
All Jofra Archer, Ben Stokes, Mark Wood, Jonny Bairstow, Jos Buttler, Sam Curran, Mark Wood, Moeen Ali and Chris Woakes were temporarily rested during the tests in Sri Lanka and India.
In Bairstow's case, he regained his place on the testing site in Sri Lanka, then missed the first two tests in India, registering three ducks in four innings on his return.
Moeen was called back for the second test in India just before missing the final two as part of a scheduled hiatus at Dom Bess site.
When Moeen decided against England's request to continue, England returned to Bess for the final test, with the off-spinner visibly lacking self-confidence.
"The rotation policy is there to mentor the players," said Root. "Everything was done in the best interests of the English team, the three formats throughout the year.
"There could have been areas where we could have done things a little differently. In retrospect, it's very easy to say.
"It's not the ideal scenario. As a captain, you always want all of your players to be available to choose from.
"But we have to get away from playing boys until they drop. We may not always get it right, but it will really be important that we take care of everyone."
England's next overseas tour is an attempt to reclaim the ashes in Australia and Root has been asked if the rotation policy will still be in place next winter.
"When we are in a bubble environment, some element of it will carry over," he said.
"It would be stupid of us to look at this and not do better for the next tour. It deserves a lot of time, attention and thought before decisions are made about it."