If you're referring to making a landscape photo, which is how this most recent discussion began, I don't think there is a light meter made in the world that would give me that level of confidence. That's despite that I consider myself at the very least reasonably proficient at using light meters.
That was my statement. It was made in the context of Manfred's statement that in most landscape scenes he would use Aperture priority metering. I would do the same.It has been stated above that by the time you take a reading and shoot the light may have changed but that also applies if you shoot then look at the back of camera at either a Jpeg image or a histogram and decide it's not quite right and have to shoot again.
Let's assume the light changes while I review my histogram and that my histogram indicates that I have underexposed by 1/2 stop. I can use the exposure compensation to adjust accordingly. When I retake the photo under different lighting conditions, the camera will automatically adjust for that change and will also use my increased exposure. In most situations, the resulting exposure will be as I want it without having to meter the scene again. If the nature of the lighting change requires that I change my method of metering, I am no worse off than when using a handheld meter and I think for the reasons explained by Manfred and William I am far better off.
This discussion has not been a debate about whether to use a handheld light meter; it has been a discussion about whether a handheld light meter or a camera's light meter is more effective when shooting landscapes and why. Some of the points made in the discussion have been compelling to me and some have made no sense based on my practical experience in the field.I think the for and against the use of a light meter debate is like politics or religion in debate, never ending!!! Make your own mind up and go with it.
As for making your own mind up and going with it, that suggests a closed mind to me and is not my approach to anything.