It appears to have taken not very long for Steve McClaren to get bored with evolution.
There must have been times when Charles Darwin felt the same, studying his finches and growing his beard.
Frankly, who has the time for evolution in these days?
Certainly not Wayne Rooney, who was soon fed up with an experiment into a Darwin-style beard and off it came.
And apparently not McClaren, who now looks ready to turn his back on England's long cherished 4-4-2 formation.
He inherited the trusty old system from Sven-Goran Eriksson and nurtured it lovingly for three games.
Steven Gerrard was gently nudged out to the right, Stewart Downing eased in on the left and Jermain Defoe shown faith up front.
Then, bang! Owen Hargreaves gets injured, Wayne Rooney returns and it's all change.
Evolution, no way. Bring on the revolution. Out with the monarchy and in with three-at-the-back.
McClaren has always admitted his fondness for 3-5-2 but did not sound like a man on the brink of radical change last Friday when he addressed the issue.
"It's something I've always wanted to try and look at," he said. "I believe it's one for the future. How soon? Who knows?"
Five days later and McClaren and Terry Venables are putting the England squad through two training sessions, based on a 3-5-2 formation to play against Macedonia and Croatia.
The manager and his side-kick had clearly spent the weekend plotting and, in the end, decided to back their tactical acumen and the quality of their players.
McClaren and Venables can both coach and have faith in their own ability to prepare the team for an unfamiliar formation.
Peter Crouch claimed that all the players had played 3-5-2 before but, in reality, their experience is very limited.
The 4-4-2 system has dominated English football for years, challenged recently by variations of 4-5-1.
Key to the success will be the wing-backs and, on the left, Ashley Cole is made for the role.
He is quick, athletic and comfortable either going forward or defending.
On the right, the choice is less obvious.
Shaun Wright-Phillips offers a dash of pace, natural width and attacking instinct.
He is not a born defender and neither are Aaron Lennon or Jermaine Pennant, the other names in the frame on the right.
A safer option would have been to play Gary or Phil Neville there with Ledley King or Jamie Carragher able to replace Gary in the back-three.
McClaren, who dabbled briefly with 3-5-2 near the end of an easy win over Andorra, would probably have liked to have tried the system first in a friendly.
There are two coming up, in November and February, but the absence of Hargreaves and the lack of options on the left may have convinced him to make the move early.
How well England respond to the experiment over the next few days will shape the future for McClaren's team.
If the players embrace the system, it will be here to stay but, if it flops, expect the revolution to end and evolution to return in the shape of 4-4-2 as soon as Hargreaves is fit.
Wayne Rooney insists he does not blame the Football Association for failing to overturn the three-match ban he picked up for his sending off in a pre-season friendly.
The England striker was sent off while playing for Manchester United against Porto in Amsterdam and the suspension imposed by the Dutch FA was upheld by their counterparts at Soho Square.
Coupled with a two-match international suspension for his red card in the World Cup quarter-final against Portugal in the summer, Rooney has featured in just six competitive games so far this season and looks as though he is lacking in match sharpness.
Reports had suggested the 20-year-old was unimpressed by the way the FA dealt with the situation.
But a spokesman for Rooney said: "Wayne does not blame the FA for any aspect of his current game.
"He is wholly committed in every way to England."