Hi,

To be honest I've never seen anything like that. I recommend assuming by default that the interviewer is trying to help you:

• Since the time of the case is limited (25-35 min), the interviewer will be giving you the tips to help you reach the conclusion faster. It's important to listen to these tips. If you hear this tip - it's important to dig deeper into this issue immediately, saying something like: "That sounds interesting. I would like to investigate this information further and if there is nothing there I will get back to my initial structure"
• Interviewers may be challenging you asking to provide more evidence (arguments) or asking how you would check the particular assumption on a real project. But I've never seen any interviewer saying that you are wrong if you were right.

Best

Hi Anonymous,

I agree the process mentioned is uncommon. What could happen though is that you get a question like “Are you sure” after a math computation, in particular if you made mistakes before.

As Sidi said, the best thing would be to:

• Recap what you have found till that moment
• Restate the elements on which the challenged conclusion is based on

Most of the time, this will let you realise there was an actual mistake from your side somewhere, and thus that the interviewer wanted to help you identify it.

Best,

Francesco