It would be more correct to consider the statement of the question not as a riddle, but as a task. Why? - you ask. - Because such questions involve variability and justification of the answer, and also require a little reflection.
There are a great many riddles like the one proposed (both simple and more complex). All of them are participants in the so-called mind games, a kind of fitness for the brain. To be precise in terminology, these are not riddles at all, but logical problems. Their solution requires not so much a large amount of knowledge as the ability to apply this knowledge correctly. The most familiar to us from childhood question on logic is about A and B, who sat on the pipe. Classic examples include Poisson's problem, Saladin's puzzle, Einstein's famous riddle of the five aliens.
At first glance, the answer to the question of how you can put two liters of milk in a liter jar seems obvious - "no way" or "it's impossible." But if you ask yourself: “What if you think about it?”, Everything changes immediately. In the clarifying question, both words become key. “To think” means that you have to not just remember, but “turn on your brain”, approach the search for a solution outside the box, show ingenuity and resourcefulness. “If” means that you can make some assumptions and guesses, take into account additional conditions. This is the ability to think logically: to reason rationally; include analytical skills; build chains from general to specific and vice versa; establish causal relationships and so on.
Here are the most popular answers to the question "how to put two liters of milk in a liter jar?" from the web resource "Big Question":
- Pour a liter of milk into a jar, then drink it and pour in a second liter.
- Pour a liter of ordinary milk into the jar, add the same amount of dry concentrate there and stir.
- Before pouring milk into a jar, boil condensed milk from it. At the rate of 2 liters of milk per kilogram of sugar, you get exactly a liter of condensed milk.
- Freeze two liters of milk in a long, narrow container. Then this macro-icicle will easily enter a liter jar "upright".
- Make baked milk. From two liters, just a liter will turn out, since during the languishing process, the milk is boiled by about half.
- Pasteurize milk, ferment and get its concentrate - cottage cheese. From 2 liters of milk, cottage cheese will be 200 grams, no more. Do not use the remaining whey, because this is no longer milk. And according to the condition of the problem, the jar needs to be filled with milk.
To choose the correct answer, one must, again, reflect. But not about who is right, but rather over how to prioritize.
Analyzing the different answers, mind game experts, IQ test writers and psychologists assess their quality as follows:
- in terms of resourcefulness and ingenuity, there are children ahead, who simply offer to drink an extra liter of milk. Toddlers generally have the ability to sometimes give logical answers faster and better than adults. The fact is that they see both events and people, and the relationship between them more purely and directly. In children's perception there is no touch of dogmas, rules and traditions among which adults live;
- in the second group - those who answered that milk should be frozen, or replaced with dry powder or concentrate. Such versions belong to savvy, quick-witted people who know how to think outside the box. They are not only aware that a substance has various states of aggregation, but also applied their knowledge at the right time;
- culinary specialists and food technologists are the undisputed leaders in terms of the number and variety of the proposed options. Those who suggested replacing the original 2 liters with dairy products are ready to confirm their point of view empirically. They know from their own experience the proportions and technology for preparing baked milk, cream, butter, condensed milk, and cottage cheese.
Perhaps there are (or will appear over time) other versions. In the meantime, in the classroom - development activities with children, the option about dairy products is positioned as the correct answer. The children cheerfully read a poem: “From this white water you can do whatever you want - butter for porridge, condensed milk, curdled milk. You can even curd - it is very tasty, my friend!"
Many are skeptical about tricky logic questions and trick riddles. For some, they are annoying and even unbalanced, especially when they cannot find a solution. In fact, such mental exercise helps to think faster, teaches you to think rationally, calmly and with concentration. And a successful answer improves your mood, instills confidence in your intellectual capabilities. As a conclusion, it is also a mystery. It's about someone who loves to solve logic puzzles.
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Agree that the answer proposed by the author (question to question) can be considered indisputable. This can be confirmed by the words of the famous statement of Albert Einstein that the human brain is characterized by inquisitiveness and a craving for self-improvement:.
