Sherlock saw that Richard hadn't responded for a while and, feeling somewhat guilty, said, "Is it impossible? Well, then... maybe I should still help you find Balasi Silver. Although you might find some, it's uncertain how much. If it's too little, I could be of help."
"This..." Richard pondered for a moment, considering that during the research process, indeed the required amount of Metal Palladium was uncertain and since the metal could be stored, he nodded in agreement, "All right, then, please help look for Balasi Silver."
"That settles it!"
"It's settled, I need to be going now," Richard said as he headed toward the warehouse exit.
"I'll walk you out." Sherlock hurried to follow, expressing his concern, "By the way, does your research have to stop before you find Balasi Silver?"
"The ongoing research looks like it has to stop, but other things can proceed."