Answer:
The characters in The Curious Incident of the Dog in the Night-Time are relatable to people in modern day society in a number of ways.
One way that the characters are relatable is through their relationships and struggles with family. Many readers can likely identify with Christopher's complex relationship with his parents and his desire to understand and connect with them, as well as his struggles with trust and forgiveness.
Additionally, the characters in the novel deal with issues of loss, grief, and coming of age, which are universal experiences that many readers can relate to.
Finally, the novel portrays the challenges and discrimination that individuals with autism and other neurological differences face in society, which may be relatable to readers who have experienced similar challenges or who have loved ones with these differences.