[clark-kent]

There is a difference between clients and customers. If I ran a startup I would prefer to have customers not clients.

You don't know how an idea will turn out until you build the mvp. The Only validation you should need is that you are building something to solve a pain you are having.

It's easy to go overboard seeking validation data for an idea, don't forget to trust your intuition, its often a more accurate source of data.

[jt2190]

I think that the author is not a native english speaker, and means 'customers' when he writes 'clients'.

[grenek]

You're right - I've had customers on my mind ;)