A room photographs beautifully at eleven in the morning and then, at eight in the evening, turns into a waiting area. It is the most common failure we are called in to repair, and it almost never has anything to do with the furniture.
So we design each space twice. The daylight scheme is about what the openings do — where the light lands at breakfast, which wall takes the glare at four o'clock, whether a sheer will do the work a blind is being asked to do. The evening scheme is about layers: something low and warm, something aimed, and almost never a single ceiling fitting doing all of it alone.
Ceiling downlights are a plan for the electrician, not a plan for the evening.
Three circuits, minimum
Our rule of thumb is three switched circuits in any room where people sit: ambient, accent, and task. It costs very little at first fix and it is the difference between a dining table you eat at and one you want to stay at. Dimming everything to forty per cent is not a scheme — it is an apology.
Colour temperature gets the same treatment. Warmer as the fitting sits lower and closer to skin; cooler only where work happens. Mixed temperatures in one sightline read as a mistake even to people who could not name what is bothering them.