What is the purpose of dreams?

Image Credit: Andreas Wagner on Unsplash
As authors we are advised not to start our novels with a scene featuring dreaming. It’s seen to be a trope – too hackneyed and familiar to be of interest.
In the real world, most of us can recall our dreams, and many believe they hold a deeper meaning. A few weeks ago, my husband shared a dream where he was up in a tree, with me balanced on a branch just below him. As he watched a plane fly overhead, it suddenly crashed into a neighbouring field. Listening to him, I instantly knew what his mind was processing. When I recently broke my wrist, he had been working on a roof while I stood on a ladder right below him, passing up a tool just before I fell. In his dream, he was recreating and working through that accident in a way he could cope with. This is a perfect example of what psychologists call an ‘instant replay’ – a distorted rerun of a real-life event that helps the brain review and analyse what happened.
But there are other theories and the question of why we dream is still open to scientific debate. Here are some ideas about the purpose of dreaming:
- It’s just the brain trying to make logical stories out of random physical signals during REM sleep.
- It’s a safe way to practice escaping, or handling real-world dangers. A rehearsal of imagined scenarios to help manage emotions.
- While sleeping the brain lowers stress chemicals and dreams help process complex feelings and grief.
- Dreams could be ‘mental housekeeping’; a means to clear away incorrect or unnecessary information as the brain sorts and processes recent events.
- Dreams may serve an important function in helping us form memories and the recall of information.
Or, as some believe, are dreams just a by-product of sleep, with no real purpose?
Finally, back to my initial question about dreaming in colour – up to 80% of people report seeing colour in their dreams, but there’s some suggestion that older people are more likely to dream in grayscale. One interesting theory holds that this correlates with the media they saw growing up, when it was common to have a black and white TV, and photos and illustrations in books, magazines, and newspapers were frequently grayscale.
What’s coming up . . .
Sunday, 27th September 2026 – Book Fair: a chance to buy books, hear talks and meet Anglian Authors. 10am to 3pm at Sudbury Arts Centre CO10 2EA.
Saturday, 10th October 2026 – Getting to Know Your Characters, a ‘how to’ workshop for writers. 1pm to 2.30pm at Sudbury Arts Centre CO10 2EA.
Saturday, 7th November 2026 – Write Fest an event for writers: speakers, stalls, advice. 10am to 3pm at Dragonfly Lounge, Colchester CO1 1AZ.
Saturday, 14th November 2026 – Working with Dialogue, a ‘how to’ workshop for writers. 1pm to 2.30pm at Sudbury Arts Centre CO10 2EA.
Saturday to Sunday, 14th – 15th November 2026 – Lavenham Fringe Tent, meet independent authors and buy books. 10am to 5pm at Lavenham Village Hall, C010 9QT.
And finally . . .
If you enjoy the crime genre this is a really interesting newsletter from Dead East, the Anglian Authors Crime Collective – https://deadeast.substack.com/p/dead-east-september-2026
If you wish to unsubscribe, I’ll be sorry to see you go but please reply with UNSUBSCRIBE in the subject line and I’ll remove you from the distribution list.











