""Will this work for 1000 simultaneous users?"" Whenever someone asks me this question, I reply with a question "How many simultaneous users do you/we have tod

""Will this work for 1000 simultaneous users?"" Whenever someone asks me this question, I reply with a question "How many simultaneous users do you/we have today and what is our projection say for 12-18 months from now ?". If the answer is not clear, I tell them not to worry yet. If the answer is very clear but numbers are much smaller today (say 5-10), then I challenge them on where they think they/we could be in 12-18 months. A lot of times, it helps the other side see that they are mostly asking "How long is a piece of string".