Sir Jackie Stewart had laid the blame for Lewis Hamilton's embarrassing collision with Kimi Raikkonen in the pit lane at the Canadian Grand Prix partly at McLaren's door, saying the team should have discussed the pit stop with Hamilton beforehand.

Hamilton ploughed into the back of Raikkonen's Ferrari while the defending World Champion and Robert Kubica were waiting at a red light in the pit lane, taking both the McLaren and the Ferrari out of the race and earning Hamilton a 10-place grid penalty for the French Grand Prix.
And although Stewart concedes that Lewis' inexperience - it is only his second season in F1 - did play a role in the accident, some of the responsibly lies with the McLaren team.

"It comes down to inexperience. It could only be expected. He has only been in Formula 1 for 15 months," Stewart told the Daily Mail.

"In Canada it was all about the failure of mind-management. I understand the team told him over the radio that the red light was on and the pit-lane closed on exit.

"If you are in the lead, the pace car comes out and you need to go into the pits, all sorts of things go through your head.

"Inexperience means you don't have the focus, the single-minded, clear-headed through process when something like that happens.

"I don't know precisely what they told him over the headset. Given his lack of experience, they should have talked him up the pit lane. Not just 'the red light's on' but 'slow down, slow down, Kimi has stopped'.

"McLaren are used to having experienced drivers, so maybe they assumed more of Lewis than was fair. The fact that he had been passed in the pits by Kimi and Robert Kubica might have taken his concentration away.

"He will make mistakes. And this one cost him the grand prix of Canada. I believe the race was his. His pace was such, and even by the time his and Kimi's race ended on lap 17 he had established a useful lead."

[source]