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Yes. Quoting from Wikipedia: "The Drake equation has proved controversial since several of its factors are currently unknown, and estimates of their values span a very wide range."
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∙ 9y ago
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What factor from the Drake Equation has a value that is not all known?
The last four parameters of the Drake equation (fl, fi, fc, and L) are not known.
What estimate does the drake equation give?
The Drake Equation is an interesting bit of wondrous speculation, that seeks to incorporate several reasonable statistical assumptions, that are based loosely on astronomical observations, into a single mathematical operation. The output of the operation is . . . The number of planets in our galaxy that are presently inhabited by technologically accomplished, intelligent civilizations.
What was the approximate mass of the asteroid that exploded over Russia on 21513?
Estimates vary from 10 tons to 30 tons.
How many koalas are there in australia?
Estimates vary. Experts say there are as few as 80,000 koalas left in the wild, while the Australian Koala Foundation estimates figures are possibly as low as 43,000, and certainly not more than 80,000.
How many possible intelligent life forms in our galaxy?
There is no way of knowing that. Although the Drake Equation attempts an estimate, it is based almost entirely on speculation.
When was Drake Equation - album - created?
Drake Equation - album - was created on 2001-06-12.
What factor from the Drake Equation has a value that is not all known?
The last four parameters of the Drake equation (fl, fi, fc, and L) are not known.
How many inhabitants in Nauru?
Estimates vary from about 9,000 to about 14,000.
Does x equals 5y - 5 vary directly with x?
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What is the population of Muslims in Germany?
Estimates vary around 4 million.
How many survivde Titanic?
705, though estimates vary by a few.
What percentage of Uzbekistan's population are Christian?
Estimates vary from 1% to 8%.
How many Old Believers are there in Russia?
Estimates vary from 1,063,000 to 2 million.
What is the temperature at the earth's core?
Estimates vary from 3,500-7,000 degrees Celsius.
How many people survid the titanic?
705 (though estimates vary by a few)
How many people do tobaccos?
Estimates vary. Far too many, for certain.
What estimate does the drake equation give?
The Drake Equation is an interesting bit of wondrous speculation, that seeks to incorporate several reasonable statistical assumptions, that are based loosely on astronomical observations, into a single mathematical operation. The output of the operation is . . . The number of planets in our galaxy that are presently inhabited by technologically accomplished, intelligent civilizations.
