Chart 2 shows intuitively why the median of the symmetrical normal curve (half of the observations on one side of the median, the other half on the other side) overlaps the arithmetic mean (adding the value of the observations and dividing by the number of observations) and describes a representative situation, a common pattern illustrated by many measures of central tendency. This creates a business opportunity since we can define a large number of more-or-less similarly behaving customers.
What spurred this blog post was an idea put forth by my friend at ESI Money in which he talks about how the first million is the hardest. ESI shares how his net worth growth has accelerated. The first million took 19 years of work (the clock starts when he started working, not at birth!) but the 2nd million took just 4 years and 9 months. J Money took this same idea and started at $100k, which took him 7yrs 11mos. Each of the next $100k milestones took close to 18 months each to reach.
Passive income is the Holy Grail for online marketers. It's automatic. Effortless. But, not at first. In the beginning, it's grueling. I liken this to doing the most amount of work for the least initial return. However, over time, as your passive income begins to increase, your reliance on an active income plummets. That's when the real magic starts to happen.
Now, all that said, if capital (savings) grows faster than the growth of the economy, those with savings will see their wealth grow at a faster rate than those who rely on the growth of their income. While this is not an extension of Piketty's argument (you can't take an idea that applies to a population and a whole economy and boil it down to the individual like this), it's not an unreasonable conclusion to take and apply to your own life. (Piketty does talk about this on an individual level, but says it's more impactful for billionaires vs. millionaires – though we have limited data into individuals)

Investing in rental properties is an effective way to earn passive income. But it often requires more work than people expect. If you don’t take the time to learn how to make it a profitable venture, you could lose your investment and then some, says John H. Graves, an Accredited Investment Fiduciary (AIF) in the Los Angeles area and author of “The 7% Solution: You Can Afford a Comfortable Retirement.”

Millennium Development Goals Report 2007 . The report importantly notes that As high as this number seems, surveys show that it underestimates the actual number of children who, though enrolled, are not attending school. Moreover, neither enrolment nor attendance figures reflect children who do not attend school regularly. To make matters worse, official data are not usually available from countries in conflict or post-conflict situations. If data from these countries were reflected in global estimates, the enrolment picture would be even less optimistic.

The original version of Barbara Winter’s book, Making a Living Without a Job, came out in 1993, and in it, she recommended creating multiple "profit centers," as opposed to building a single income stream. Over ten years later,  Robert Allen, the real estate entrepreneur, also wrote a couple books promoting the idea of multiple streams of income. Back then, building more than one source of income was difficult, time-consuming, and expensive. Fortunately, things have changed today. The Internet has made it easier, faster, and more affordable to generate multiple income streams.
Stocks (shares) paying dividends are typically a reliable source of income but they have higher risk of capital losses than cash and bonds. So, it’s wise not to chase yield indiscriminately.  The 10 highest yielding stocks on the ASX 200 (the 200 largest companies in Australia) are shown in the table below.  But their share price performance on average over the last year has been underwhelming, as shown in the far right column: