Even Alan Solomons, the Scottish side's head coach, admits he does not know the answer. He is confident the team are making progress and will get there in the end, but whether they are up to the Catalan challenge of Perpignan this early in his time in charge of the side, is still one of the great unknowns.
"It [beating Munster] was good for the confidence and a reward they deserve," he said. "I have been making the point to them that they are very close to the line between success and failure — it is a fine one — and they have been improving. They have got to a stage where they have executed more accurately and got the result they deserve.
"That has generated a measure of confidence but lets be honest we face a massive challenge, not just because we are playing Perpignan who are one of the top Top 14 sides, especially at home — the Catalans have a massive amount of pride and they need to get the win after defeat to Gloucester. We are still a side who are building and developing. We had a mini peak at the weekend, so to come off the back of that, travel to Perpignan and play is a huge challenge. That is how our team is going to develop — by meeting those challenges."
All of which means that not even Solomons is prepared to predict an Edinburgh win in the Stade Aime Giral, but he has given his players a vote of confidence by picking as close to the same starting fifteen as injuries permit — the only change is Roddy Grant coming in for Dmitri Basilaia, who has damaged a groin muscle.
"We have got to focus on our team and on our performance," Solomons said. "What is going to be tough for the team is that we have had this mini peak and we have to go and show a measure of consistency away from home against one of the top teams in the competition. It is not going to be easy but that is what it is about — we need to be able to do that.
"It is about us getting the right performance out there. If it is good enough to win, so be it, but we need to perform well, particularly in the context of the match that we have just played and the season that we have had."
His message has clearly got through to the players as well. Grant is equally cautious about predicting the result but is confident that the side can prove that last week was no fluke, and after playing a number of games in France before he also knows that the key to the game is the way they start.
"If you front up and start well against the French sides it helps your own performance, of course, but it also helps you to feed off the crowd, even silence the crowd. That's the challenge," he said. "If you can get that first 20 minutes right then you're setting yourself up well for the game and to go on and get the win.
"We know they will be looking to come out of the box flying, with steam coming out their ears, to gee up the crowd, so that's the challenge. That's the battle.
"Generally, their pack is going to be a big challenge for us, particularly for me as a back row, because my job is to stop their momentum, and they are big men. It's going to be a case of fronting up and really getting stuck into them, rather than looking just to contain them.
"They have good ball players in the back, including James Hook, who we know well, and like most French sides they have a good mix of brutes up front and skilful and ball-carrying backs."
What the Scots and the French can probably agree on is that Hook is the key to the game. He collected a scoring "grand slam" - a try, conversion, drop goal and penalty —from full-back last week in their 27-22 defeat to Gloucester and this week has been asked to step even closer to the action at fly-half.
"Hook is a very, very good rugby player, an outstanding footballer," was Solomons' verdict. "At 15 he has had a lot of licence, he can run a lot as he did last week, he is a complete footballer. The scrum half [Dewaldt Duvenage] is also a very good footballer — I know him from South Africa — he is very much a French style player. He is left-sided, which complements Hook, and he has got a very, very educated boot."
Mercurial and a lethal kicker, Hook is the main man and has quickly become a crowd favourite at Perpignan. If he can get into the game — one of Grant's main jobs is to stop him — then he could make it a long, hard afternoon for Edinburgh.
Intriguingly, though, if he moves or is rested, then the likely replacement would be Tommy Allan, the 20-year-old who came through the Scottish age-grade system but has accepted an invitation to train with Italy at the end of this month. If he does come on, he is likely to be facing Harry Leonard, the 21-year-old who was his predecessor in the Scotland Under-20 side.