I disagree. I think everybody needs assistance every now and then, and it's important that you will ask for assistance when you need it. I strongly prefer a programmer who asks for assistance over one who will get stuck on his own for days or even weeks.

But a senior will definitely ask when he needs help, and won't wait until someone comes to him. And even without the right help, he'll still figure out some way to move forward. Usually, he can figure out his own problems while also offering assistance or guidance to others.