Then you thought wrong.
Some things are absolute. We know objects aren’t going to fly into space even though the earth is spinning on its axis while it orbits the sun at 1,000 miles per hour. That’s because we know gravity exists.
We know that the world’s climate is changing. We know that sea levels are rising and ice caps are melting. We know that the earth’s temperature has risen 0.32° F every decade since 1981.
Just because we don’t know everything doesn’t mean we don’t know anything. We know the earth is spherical. People who deny that are ignorant. We know the earth’s climate is changing. People who deny that are ignorant.
Scientific methodology dates back to ancient times. The methods of scientific inquiry have been refined throughout the years by people like Epicurus and Newton and so on.
“The scientific method was not invented by any one person, but is the outcome of centuries of debate about how best to find out how the natural world works. The ancient Greek philosopher Aristotle was among the first known people to promote that observation and reasoning must be applied to figure out how nature works. The Arab Muslim mathematician and scientist Hasan Ibn al-Haytham (known in the western world as Alhazen) is often cited as the first person to write about the importance of experimentation. Since then, a large number of scientists have written about how science should ideally be conducted and contributed to our modern understanding of the scientific method. Those scientists include Roger Bacon, Thomas Aquinas, Galileo Galilei, Francis Bacon, Isaac Newton, John Hume, and John Stuart Mill. Scientists today continue to evolve and refine the scientific method as they explore new techniques and new areas of science.”
https://www.britannica.com/science/scientific-method
In the case of the scientific method being applied to climate change, first we observe. We observe global temperatures, we observe ocean temperatures, we observe rising sea levels, we observe ice caps disappearing, and so on.
Secondly, we form a hypothesis as to why this is occurring. Could it be solar flares?
Next, you conduct tests and experiments. We measure the amount of heat entering and leaving our atmosphere. Less infrared radiation is leaving our atmosphere. No, it isn’t solar flares.
Therefore, you can determine that climate change is not influenced by the sun.
And you continue to hypothesize and test and so on.
Climate change, like gravity, exists. These are observable phenomenon. The why part is where the scientific method comes into play.
You can deny gravity exists. You can deny the earth orbits the sun. You can deny water changes its molecular structure when exposed to freezing temperatures. And you can deny that the earth’s climate is changing. But doing so would mean you’re ignorant. No other way to say it.