Being an engineer, I’m gonna present you with a more straight-forward version than the philosophical one.

For something to be real, it has to have consequences.

‘But…?!?’

No buts!
The only thing which classifies something as being real or not is our consciousness.
Without it, without our consciousness, the something we’re talking about now – reality itself, would cease to be ‘real’.
Without us pondering about it, ‘reality’ would continue to exist, of course! Only it would no longer bear a name… Without us being concerned enough about it, it would ‘disappear’ from our ‘radar’.

‘Yes, but … you just said that something becomes real as soon as it has consequences!
We encounter ‘real’ things in each and every moment of our existence.
We need air to breathe, water to drink… food to eat. And a solid earth to walk on…’

True enough. Only for all these things to become ‘real’, we first need to notice them!

See how ironic things are?
In retrospect, electrons are real. Despite the fact that none of us can actually see them. Or otherwise ‘feel’ them. In any way, shape or form!
But until we had gathered enough evidence about their existence…

And now, that our discussion has reached this subject – evidence, I feel the need to mention the fact that Earth is not yet round ‘enough’. That there still are some people actually believing in the notion of the Flat Earth.

‘Are you implying that the Earth might be Flat?!?’

Excellent question, thank you very much!
(If I may say something like that myself. Please excuse my boastfulness!)

You see, we are dealing here with two things. Two very different things.

The roundness of the Earth. Which seems to be real.
The ‘Flat Earth’. Which is certainly real.

‘Now you’ve outdone yourself! For sure…’

I’m almost certain that you can hear me chuckle.

The roundness of the Earth belongs to the realm of science. Which is ‘wrong by definition‘. At least according to Popper… In the sense that the Earth will continue to remain round only till somebody will prove it to be different. Which had happened already… In ‘reality’, the Earth resembles a potato more than anything else!
On the famous ‘other side’, the ‘Flat Earth Theory’ belongs to the realm of belief. Which is also real. Not in the ‘direct’ sense – a concept which describes a real ‘reality’, only in the sense that it has certain consequences.

‘The Flat Earth has consequences?!? You admit that the concept – ‘the Flat Earth’, describes something which doesn’t exist yet you pretend that it has consequences?’

Yep!

Can you deny the reality of this whole thing? Six hundred and twenty million hits? In less than point 8 seconds?
Can you pretend these are not ‘real consequences’? Can you imagine, for instance, how much energy is spent only to preserve this amount of raw information in the ‘cloud’. How much ‘space’? How much bandwidth is used to transport this ‘fake-ness’ across the ‘globe’!

‘And where does this whole thing lead us?
What about the Flat Earth?
Is it still a fake?’

Yeah.
I’m actually tempted to say ‘obviously’!
On the other hand… it’s hard to deny how ‘real’ the whole thing is…