"He said to take a cab; she said to walk. La kashya. He means when it's raining; she means when the weather is nice."
"As an independent minyan entrepreneur, a common question I get asked is "This is all well and good when you're in your 20s and 30s, but what are you going to do when you have children?", and I have steadfastly maintained that this question is irrelevant. La kashya (there is no contradiction): the question is irrelevant for Kol Zimrah (and other independent minyanim), but is relevant to us as individuals and as a cohort." (source)