Xavier would not let Serena's work be in vain.
She doubted Slade realized that, by letting her work with him here, he was revealing his other side.
It is better to let your subconcious work.
Those who were let their work make clear the distinction.
"Don't let me keep you from your work any longer."
They have simply let their work speak for itself.
Not that it wasn't my wife's fault for letting her work in the hotel!
"I'd rather let my work as a teacher, scholar and advocate speak for itself," he said.
"Let our work begin, now, out in the square."
A key aspect of the technique is to partner with the user, letting their work and the issues they encounter guide the interview.