Do you think that the duke and the king will play a continuing role in the novel why what narrative problem does their appearance solve?

In “Adventures of Huckleberry Finn” Mark Twain uses Duke and The King as a bizarre version of Huck and Jim and also as a break point for Huck, with them Huck learns that it is better to be in the right side of the law, that the no rules world is not that great and grows personally.

to show how the cables work.

i decided to stay late in the laboratory to continue my experiment with the lightbulb. at midnight, thomas edison opened the door and saw all the stuff he was working on. the lightbulb, film and the transmitter. as he walks in an idea hits him on how the lightbulb would work. he would have to change a few wires around to get it to light up. when he did change the wires around it worked so he decided to write a telegraph to his friend to tell him about his success.   as he was packing up he grabbed the telegraph and walked to his home. he told his wife about the success and the next morning mailed the telegraph.