It’s a fact because she is a veterinarian
This is just one theme introduced in Act 1.3. Numerous other themes are revealed: evil, ambition, the unnatural, the grotesque, and others. Ironically, when Banquo warns Macbeth that the witches may be tricking him in order to later bring him harm, he pretty much summarizes the plot of the rest of the play.
Dill is a huge liar. He lies to make others like him.
"Among other things, he had been up in a mail plane seventeen times, he had been to Nova Scotia, he had seen an elephant, and his granddaddy was Brigadier General Joe Wheeler and left him his sword."
Distance is how much you traveled from begin to end so if you traveled along a road that was 500 m twice then your distance is 1000 m
displacement is change in position between your starting and ending points and since you started and ended at the same place then your displacement is 0<span />
