Wasn't that obvious?

No, to some people, as obvious from the thread I linked, it's still possible for this generation to increase over last generation. I really don't see it.

 Once again, I ask, how is 153M + for PS4 LT so naive? Do you have any actually reasoning behind this?

Ok, I think we could both agree there are people not interested in video games and people who are just barely interested and not willing to buy consoles anyway, right? So the question is: What does the ps4 offer to these people that ps3 or 360 weren't offering already? If you could awnser to this question you may explain how the Ps4 is supposed to sell 153M units.

Right now Ps3 has sold 80m in 7 years and X360 80m in 8 years (let's leave Nintendo out of the equation), this means the whole console gaming population is 160m by now, actually it's less beacuse you know some people bought both Ps3 and 360 and those people are counted 2 times. So by saying the Ps4 will sell 153m you could imply 2 different things: or the Xbox One will sell abysmally (like the WiiU or worse), or the market as a whole, so the gaming population, will grow by a good margin. How is that supposed to happen? If Ps4 can't offer something very appealing to people who haven't bought Ps3 or 360 before it simply can't happen.

Yep. Without the casual fad boost we had last gen we won't even get close.

 You might as well ask what any new gen console offers over the previous gen? Why do people buy new consoles, period? Easy. More powerful hardware, more new games on said hardware, more new features, and so on. If people didn't see the potential of the PS4 over the previous gen, it wouldn't be continually flying off shelves like it has been.

depends on how long this gen will last.
if it go until 2020, i think is possible.
also, we can count the wii u sucessor...

1) Wii U projection is likely right.
2) XBone projection is potentially too high... but you never know at this point. I say this as its starting to sell less as compared to X360 in same lifespan.
3) PS4 is selling well and likely to repeat PS1 and PS2 market dominance in most respects. If that demand continues as expected, I'd wager it will definitely out do PS1... likely not PS2 due to Xbone being bigger than Xbox.

I gave you my reason. It's all over the OP.

The whole market is in decline. Video gaming is still large, yes. Last generation was the largest and will either forever be or be for a long time. Sony sold 80 Million last gen with a much bigger market and the industry on the up swing. Why would they manage to sell 153+ Million consoles (AKA, the highest sold number of consoles ever) in a market that's on the decline? This generation won't be as long as Gen. 7 and keeping the PS4 out for how long the PS2 was out is a stretch. All of this and that Microsoft has a much stronger brand than they did before. Posing much more difficult competiton.

I have a question for you; do you actually believe it can do this? No one in this thread, from what I've seen, thinks this generation can post positive numbers over last generation, let alone having the PS4 do 153+ Million. 

Still, this is not what my thread's about. It's about the generation, not the PS4. I'm sorry if I lead you on in this conversation, but I'm done dicussing the PS4 with you because I don't want this thread turning into that.

Casue most on here cant fanthom such a possability.  With wiius failure ninentdo fans will scream marklet is in decline yet new hardware just set all time records.  Good chance it will given its weak competition, great start price and how well gaming as a whole has welcomed it.

PS4 might usher in the largest console sales era ever based mostly of its sales alone.