We are already well into the "Independence" Generation in Scotland.

BORIS Johnson will block a second independence referendum even if the SNP wins a Holyrood majority next year, the Scottish Secretary has said.

Alister Jack said a Tory government at Westminster would refuse to grant Holyrood the power to hold Indyref2 for a generation or even for Nicola Sturgeon’s lifetime.

He told the BBC Scotland’s Sunday Politics that position would not change even if the SNP repeated their electoral feat of 2011 and won a second Holyrood majority in 2021.

He said: “We do not think that 2021 is the time to start having more referendums.”

Ms Sturgeon was born in July 1970 he Office for National Statistics puts UK life expectancy at 79.4 years for men and 83.1 years for women this means that the Tories intend to block an Independence referendum for  over 30 years.

Asked what the SNP would have to do to get a mandate for Indyref2, the Scottish Secretary said: “Let’s see the benefits of Brexit. They’ve talked Brexit down as a disaster. Let’s see if the world’s still spinning on the 1st of February and how things can be good for Scotland.”

Asked if his message to Nicola Sturgeon’s was that her successor or successor’s successor would have to wait for Indyref2, he said: “Yeah, a generation or a lifetime has passed. Let’s see the benefits of Brexit for the United Kingdom first.”

So how long is a generation 

The Western world includes Western Europe, the Americas and Australasia. Many variations may exist within these regions, both geographically and culturally, which means that the list is broadly indicative, but very general. The contemporary characterization of these cohorts used in media and advertising borrows, in part, from the Strauss–Howe generational theory^[14][31] and generally follows the logic of the pulse-rate hypothesis.^[32]

• The Lost Generation, also known as the Generation of 1914 in Europe,^[33] is a term originating with Gertrude Stein to describe those who fought in World War I. The Lost Generation is defined as the cohort born from 1883 to 1900 who came of age during World War I and the Roaring Twenties.^[34]
• The Greatest Generation, also known as the "G.I. Generation,"^[35] includes the veterans who fought in World War II. They were born from around 1901 to 1927^[36] and came of age during the Great Depression. Journalist Tom Brokaw wrote about American members of this cohort in his book, The Greatest Generation, which popularised the term.^[37]
• The Silent Generation, also known as the Lucky Few, were born from approximately 1928 to 1945.^[38][39] In the US, the cohort includes some who may have fought in World War II, most of those who may have fought the Korean War and many of those who may have fought during the Vietnam War.
• Baby boomers, also known as Generation W,^[40] the Me Generation or Boomers^[41], are the generation that were born mostly following World War II, typically born from 1946 to 1964. Increased birth rates were observed during the post–World War II baby boom making them a relatively large demographic cohort.^[42][43]
• Generation X, commonly abbreviated to Gen X, is the generation following the baby boomers. Researchers and popular media typically use birth years around 1965 to 1980 to define Generation Xers, although some sources use birth years beginning as early as 1960 and ending somewhere from 1977 to 1984. The term has also been used in different times and places for a number of different subcultures or countercultures since the 1950s.
  • In the U.S., some called Xers the "baby bust" generation because of a drop in birth rates following the baby boom.^[44] The drop in fertility rates in America began in the late 1950s. But according to authors William Strauss and Neil Howe (who use a twenty year span from 1961 to 1981 for their birth years), by 1991 there were approximately 88.5 million Xers in the U.S.^[45]
• Millennials, also known as Generation Y,^[46] are the cohort of people following Generation X. Researchers and popular media use the early 1980s as starting birth years and the mid-1990s to early 2000s as ending birth years, with 1981 to 1996 a widely accepted definition. According to Pew Research, the Millennials will surpass the Baby Boomers in numbers in the U.S. in 2019, with an anticipated 72 million Boomers and 73 million Millennials.^[47]
• Generation Z, also referred to as Gen Z is the cohort of people born after the Millennials. Demographers and researchers typically use the mid- to late-1990s as starting birth years,^[48] while consensus has not been reached on the ending birth years, although 2012 is a widely accepted cutoff.^[49]
• Generation Alpha, also known as Gen A and as the Generation of the Future ^[50][51] the post Millennial generation and Generation Z. The accepted starting date is 2011 and will end approximately 2025. Most, but not all, of these babies will be born to millennial parents, and will be the third generation born under the War on Terror (1978–present). Living only in an age of technology, this will be one of the most targeted demographics for advising; even starting in their toddler years, app developers and brands will be focusing on building loyalty to their products.^[52] Being environmentally conscious will heavily influence life style and choices. AI and robot interaction will be commonplace, creating new ways of thinking and ways of doing things. Often referred to having jobs that don't yet exist, higher education and specialization will be key for success, during a new age of automation with neural nets and AI. Also living in a new age of sexuality the LGBTQ movement of 1970s to 2000s will allow for new parenting styles, and gender neutral children will be a highly focused topic in up and coming years as the push for equality increases.^[53]

So even that seems to be about 15 years so . So we are talking  about 2029, and whilst that seems along way away , We have already had three UK General elections since  the 2014 referendum (2015,2017,2019 and probably to more before  2029 and would have seen three Scottish Parliamentary elections,

Indeed even seven years after  2014 the demographics of Scottish population have changed dramatically and as  the polls indicate those who have reached over 18 (or even 16) by the next independence referendum even one called now and are more likely to vote YES could well surpass  the 45% who voted in favour last time and many No voters may have past away.

We are already in the Independence  Generation , which started in 2014 nd deserve there say now.