England bowed out of the tournament with a match still remaining in their Pool A campaign when they lost by 15 runs to Bangladesh on Monday, their fourth defeat in five matches.
It was a similar situation at the World Twenty20 last year and England then ended their campaign in ignominious fashion by losing to Holland.
And Farbrace said: ???If losing the game to Bangladesh was terrible, we couldn’t possibly imagine what it will be like if Friday goes against us.
“That would be horrendous. Our job now is to make sure we give ourselves the best chance, clear heads, and go and play proper cricket.”
In the wake of the Bangladesh loss, England coach Peter Moores has been criticised for an over-reliance on statistics, particularly after he said he would ???look at data??? following the defeat.
However, Farbrace says it would be wrong to suggest England are overly obsessed with crunching numbers and says the Sri Lanka team he coached to victory in that World Twenty20 event used a more stats-based approach.
“There has been a lot said about the stats and team meetings,??? he said.
???But with the Sri Lanka team we had more team meetings and we looked at stats more than the England team currently do. There’s no question about that.
“We had a team of six people working for us during the Twenty20 World Cup last year with the Sri Lanka team, in India, who were providing us with data straight away after a game and then the next morning, which we then used to prepare and practice for the next game.
“That’s what won us the final. Our preparation from fantastic statistics helped us to bowl in the right places for the last four overs and win that final.
“We’re not spending hours and hours in front of a white board and we’re not spending hours chewing over stats and numbers. We’re encouraging people to go out and play the game.
“I think it’s tough on Pete but he accepts that. He knows that comes with the territory.???
England???s players have iPads they can use to download footage and statistics but Farbrace says no one is forced to take an overly analytical approach.
“It’s up to them if they want to use it,??? he said.
“Ian Bell is someone who is a very well planned and methodical bloke. He wants to know how many net bowlers we’ve got, will there be a left-arm seamer, will there be a right-arm seamer. He probably looks at his footage in detail.
“But Moeen Ali will come to me and say: ‘Listen, Farb, I’m not interested in what is on my iPad. I just want to go and bat’.
“You have to cater for everybody, there are lots of different ways that people like to learn.???
England are set to make at least two changes for their first-ever one-day international against Afghanistan because Moeen (side strain) and Chris Woakes (foot) have been ruled out.
Ravi Bopara and James Tredwell are the only two players in the 15-man squad who have yet to be used in the tournament so far but could get their chance on Friday.