I said as measured by surface temperatures, the sun's irradiation is considered constant at 1,360 (± 5) W/m^2 ...
We have satellites in space pointed towards the Sun and we can measure irradiation much more accurately ... IIRC this varies between 1,361.2 and 1,363.5 W/m^2, depending on sunspot activity ... but this change only makes for temperature changes of a couple hundredth's of degrees here on Earth's surface ... we don't measure temperature that closely ...
The thermometers we use in wide distribution only measure to the nearest whole degree Celsius ... so solar irradiation need only be measured to the nearest 10 W/m^2 ... that's what the (± 5) means ... the Solar Constant is between 1,355 and 1,365 W/m^2, that's accurate enough for meteorological and climatological studies ... 1ºC is a tiny amount ... and that's the all of all global warming to date ... a tiny tiny amount ...
Did you notice 2024 was one degree warmer than 1965? ... neither did I ... one degree doesn't change weather, so it's doesn't change weather averages ... or climate ...
Science is public information ... we should study the material ourselves and NOT rely on others to tell us what to believe ... this isn't religion, we don't need a priest ... and never ever trust a politician in anything ... except for being corrupt ...