Few individuals really, truly, understand what it feels like to manage an Old Firm club. And fewer still can comprehend having to shoulder the challenge of sketching out history.
Walter Smith may not be among those who hope Neil Lennon succeeds in helping Celtic to 10 successive Scottish championships, but the Rangers legend will certainly have the profound knowledge of carrying a similar burden.
Smith helped the Gers to nine in-a-row between 1989-97. The idea of either a Celtic or Rangers side ever emulating the feats of Jock Stein's supreme Parkhead outfit of the 1960s to mid-70s was fanciful back then, but Smith, former assistant to the thrawny Jim McLean at Dundee United, with an upbringing in Glasgow's tough east end, did so.
Stein and Smith held dynasties more than anything else as a consequence of the respect and fear they both commanded. Yet now, a single-minded son of Armagh Orchard County is undertaking an objective which could surpass both - even Stein, unique overlord, sown from that implausible DNA of Lanarkshire mining stock.
Well, technically at least. The idea of 10 in-a-row for Celtic, with Lennon in charge, is the mainline fuel for the club's fans as we embark on a new season, still coping with the effects of Covid-19. When it comes to comparisons of eras, players and the minutiae, we could be here all day.
Lennon's countless detractors from Ibrox will point to Celts having had a pretty free tilt at many of the titles due to Rangers' enforced demotion in 2012. And that Smith's domestic dominance occurred during an era of authentic, taut Old Firm competition, with Tommy Burns in charge of a Celtic side who would have been champions themselves if only they possessed craftier street smarts.
Moreover, Lennon may not have any European Cup winners in his ranks, like Stein, but it is impossible to project many serious comparisons. Celtic fans will enjoy this nervy ride alongside their man. In Lennon they trust.
Last season, Celtic took advantage of Rangers' startling slump during the latter stages, before being awarded the title as the Covid-19 pandemic halted proceedings. Lennon and his players were delighted, conscious of their resilience and work ethic. Such was Celtic's dynamism that the manager was generally a figure of contentment.
This season, though, could be different. Once-in-a-lifetime pressure on Lennon. An improved Rangers, you imagine. The Ulsterman's comparative serenity may be tested when responsibilities swell. Or maybe not, if Celtic's recent high standards are met. And clearly Lennon would opt for events on the pitch to speak with more volume.
Surely, the former Northern Ireland midfielder hopes his more unedifying behaviour in recent seasons is left in the past. For instance, the goading of opposition fans at Ibrox and Tynecastle, increasing already fiery occasions. Of course, while it must be counterpointed that Lennon has been, disgracefully, attacked in the past, pitch-side at the latter venue, it still remains imperative of a manager of a major football club to behave with more restraint while leaving crowd control to the police.
The theatrics haven't always been confined to his employment at Celtic. When Lennon was Hibernian manager, there was a highly-publicised touchline fracas with Morton counterpart Jim Duffy, one of the most likeable and respected men in the Scottish game.
However, in Lennon's defence, such episodes appear to be on the wane and opposite numbers have rarely held grudges.
It helps, naturally, when your team is all-conquering. The old 'pantomime villain' label has always been too simplistic in any discussion over Lennon, a complex individual, who clearly thinks deeply not just about football but life beyond it. His autobiography, Man and Bhoy, provides a keen insight. Growing up in Lurgan during the Troubles, a sports-mad teen was largely shielded - in so far as anyone could have been back then - from a fragmented society and its violence. But despite becoming a popular enforcer at Leicester City under mentor Martin O'Neill, darker thoughts slowly emerged.
"Leicester City had just won the League Cup and I had everything I wanted - the money, the house, the lifestyle," Lennon previously admitted. "But one morning I woke up and thought, 'Something's not right here'."
The man who once sat morosely in the Ibrox dressing room in the euphoric moments after an Old Firm victory for Celtic, Lennon is better placed than most to recommend increased help for players with mental health issues. "It can make somebody's life better, never mind their career," he said.
Closer to home, most of us can remember a period which would have undoubtedly left its mark on a player: the death threats and subsequent retirement from the Northern Ireland international scene.
Those times from an Irish FA and supporter perspective are, thankfully, gone. That Lennon had to endure external intimidation and the jeers from a minority of his country's own, so-called fans were shameful signs of a still relatively recent era. Lennon admitted the whole chapter left him 'scarred' - and it would be ill-advised for any of us to pass judgment on what it was like to be someone enduring this, merely as a result of being employed by Celtic.
The hardest times are invariably sure tests of character, and the resilience, both professionally and personally, of the 49-year-old is without doubt.
Emerging into the lonely managerial arena, questions came. The departure from the Parkhead dugout in 2014 (we can assume due to a need for a complete break from Glasgow's infamous goldfish bowl). The wisdom of taking over at Bolton Wanderers, which transpired to be an error considering the Lancashire club's financial problems. The logic over returning to Scotland again, with Hibernian. The criticism from a number of Celtic fans over his permanent reappointment at the end of 2018-19.
Lennon risked a chunk of gilded Celt status by harnessing the reins. Strong backing from the club's chief executive, Peter Lawwell, and a healthy budget from Champions League participation remains particularly helpful, in parallel with Gers' inconsistency and attempts to engineer greater financial health.
Lennon has shown his maturity on the continent and was more dexterous here compared to predecessor Brendan Rodgers. Celtic's triumph over Lazio in Rome last season was arguably one of the club's finest hours in Europe.
Perhaps only in time might the Lurgan native be viewed singularly as a reliably excellent coach with enviable staying power, rather than being the accompanying, controversial subject of a bristling folk hero/folk devil debate.
Lennon's achievements as a Celtic player and captain - 11 domestic trophies - are assured. Nevertheless, even if Rangers do thwart their foes' mission to 10 - another debatable issue - his legacy in terms of silverware should always be safeguarded. Already, five titles this decade have been stockpiled under Lennon.
Shoals of time have washed away since the unimpeachable legend of Stein. What Lennon, though, has epitomised for the green half of Glasgow - strength, consistency and know-how - deserves nothing less.