How much water do your plants really need? This German word is useful outside of your garden, too.
If the little sprouts in the pot are to become sunflowers, they'll need lots of water. And for that you need a watering can with lots of little holes in the spout, so that the water is distributed equally to all the sprouts.
The Giesskannenprinzip - or watering can principle - is much the same thing, except instead of water, money flows through the holes. Whether you're a parent distributing a weekly allowance to all your children or a CEO planning the company budget for the coming year, sometimes it can be easier to divide up the pie - or the water - equally.
While the Giesskannenprinzip might be fair in some cases, it doesn't take into account individual needs, like your 10-year-old who's saving for a new bike or the marketing department who's planning a major new campaign. So, best to apply the Giesskannenprinzip with care.