There are a lot of benefits.
If you think of the [current] kilogramme it can fall down.
Or you scratch it.
So, you are losing a part of the kilogramme.
The result would be that the whole universe would get heavier.
This obviously cannot happen with constants, the numerical values which you have fixed.
So they are fixed and they are graved in stone forever.
The system becomes more stable.
This is one of the very important ingrediencies.
The second one is, for instance that you can realise the units everywhere in the world.
You don't need to go to Paris in order to compare your kilogramme with that kilogramme.
But you can do an experiment in your own laboratory, also in industry, in calibration laboratories
and realise the kilogramme – so to say – by yourself.
You have to make sure that the experiment is correct and compared, but otherwise you
can realise it in your laboratory.
Another big advantage.
Another big advantage is that we then would have a coherent system.
So, we define these defining constants and we use the equations of nature, of physics,
and out of that the units emerge.
So, it is a coherent, consistent system, based on our present knowledge.
It is perfectly possible to connect now these measurements, these sensors to the internet
for instance.
Because it's as I said, you don't need to go to Paris for the kilogramme but you
have it in your laboratory.
You can automatically calibrate, you can bring these calibrated values into the internet.
The internet of things and the industry 4.0 is perfectly connected to that - another example.
Electrical units are, as I said before, back in the SI.
So, we have a wonderful and good system.
And very importantly, maybe the most important thing is that we think that we trigger a lot
of innovation in industry.
Because now, everybody in the world could say "Okay, here are these defining constants
and I have an equation connecting them and giving or connecting them to a unit.
And then I only need to invent a certain experiment finally, to realise the unit by my own."
And maybe better than it was before.
So, we can become better and better and better without changing the definition.
This is one of the big advantages: There is no limit in accuracy how we can realise the
units.
It's only limited by our technical possibilities but not by the definition.
If you look at the [current] kilogramme for instance, you can never be better than the
properties of this artefact.
This will not be the case [in the future].
And this actually we think, will then also trigger innovation in measurement industry.
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